Category: Physics

U8.4 – Antiparticles

Antiparticles

1 / 12

The quark structure for a proton is uud. Select the quark structure for an antiproton.

uud

ddu

~~ddu~~

~~uud~~

2 / 12

A positron is __________.

a lepton

ddu

an antilepton

an antibaryon

3 / 12

What is 1 GeV/c² equivalent to?

1.78x10^-30 kg

1.78x10^-27 kg

1.60x10^-30 kg

1.60x10^-27 kg

4 / 12

Select the equation to calculate the minimum energy from pair production.

5 / 12

Which sentence is incorrect?

A particles corresponding antiparticle has the opposite charge to it's particle.

A particles corresponding antiparticle has the opposite mass number to it's particle.

A particles corresponding antiparticle has the opposite baryon number to it's particle.

A particles corresponding antiparticle has the opposite lepton number to it's particle.

6 / 12

A particle has a charge of -1 and a lepton number of +1. Would you describe it as a lepton or antilepton?

Lepton

Antilepton

Neither

7 / 12

Pair production is produced from ________.

Two colliding photons.

A single photon.

Two colliding baryons.

A single hadron.

8 / 12

What is the baryon number of an antiproton?

-1

N/A

9 / 12

What is the baryon number of an antineutrino?

-1

N/A

10 / 12

The opposite of pair production is ___________.

Absorption

Decay

Annihilation

Collison

11 / 12

Which antiparticle, from the following, has a charge of +1 and a baryon number of 0.

Proton

Antiproton

Antineutron

Positron

12 / 12

Which antiparticle, from the following, has a charge of 0 and a baryon number of 0.

Antineutron

Positron

Electron antineutrino

Thank you for taking the quiz. Please fill in the fields below and you will receive your results in an email.

If you have been set this as homework, you should forward this email to your teacher as evidence you have completed the quiz.

If you don't receive your email please check your spam or junk folder.

Your score is

U8.3 – Particle Physics Basics

Particle Physics Basics

1 / 11

Which particle is not a baryon?

π⁺

2 / 11

Which particle is the only stable baryon?

π⁺

3 / 11

Which particle is not a hadron?

e^-

π⁺

4 / 11

Which particle is not a lepton?

[1] e^-1

[2] ν_e

[3] μ⁺

[4] τ^-

e^-1

ν_e

μ⁺

τ^-

5 / 11

Which particle has a baryon number of 1?

π⁺

ν_μ

K^-

6 / 11

Which boson is not a gauge boson?

7 / 11

Hadrons are made from _______.

baryons

mesons

quarks

pions

8 / 11

Which particle has a baryon number of 0?

K⁰

9 / 11

Which row is correct for an atom of Carbon-13?

10 / 11

What is the baryon number for π⁻?

-1

11 / 11

Which statement is not true for neutrinos?

The mass of a neutrino is 0 (or almost 0)

A neutrino has a charge of -1

A neutrino has a lepton number of +1

The particles e-- and τ- all have their own neutrino

Thank you for taking the quiz. Please fill in the fields below and you will receive your results in an email.

If you have been set this as homework, you should forward this email to your teacher as evidence you have completed the quiz.

If you don't receive your email please check your spam or junk folder.

Your score is

U8.2 – Atomic Structure Basics

Atomic Structure Basics

1 / 16

Where in the atom is the majority of the mass located?

Electron Orbits

Protons

Neutrons

Nucleus

2 / 16

What does the atomic number of an element represent?

Number of neutrons

Number of protons

Number of protons and neutrons

Number of protons, neutrons and electrons

3 / 16

How many electrons are in an atom of Helium?

4 / 16

How many protons are in an atom of Chromium?

5 / 16

How many neutrons are in an atom of bromine-79?

114

6 / 16

How many electrons are in an ion of Al²⁺?

7 / 16

How many protons are in an ion of N^3-?

8 / 16

State the charge on O^2- in Coulombs.

-3.2x10^-19 C

-1.6x10^-19 C

1.6x10^-19 C

3.2x10^-19 C

9 / 16

State the charge on Cr³⁺ in Coulombs.

-4.8x10^-19 C

0 C

4.8x10^-19 C

3..8x10^-18 C

10 / 16

State the charge on an atom of Li in Coulombs.

-1.6x10^-19 C

0 C

1.6x10^-19 C

4.8x10^-19 C

11 / 16

What is the atomic number of Manganese?

12 / 16

What is the mass of europium-153 in kilograms? m_e = 9.11x10⁻³¹ kg, m_p = 1.67x10⁻²⁷kg

2.5551x10^-25 kg

2.5557x10^-25 kg

2.5565x10^-25 kg

5.7393x10^-29

13 / 16

What is the mass of Sulfur-32^2- in kilograms? m_e = 9.11x10⁻³¹ kg, m_p = 1.67x10⁻²⁷kg

5.3440x10^-26 kg

5.3453x10^-26 kg

5.3455x10^-26 kg

5.3456x10^-26 kg

14 / 16

What is the the charge to mass ratio of an electron? m_e = 9.11x10⁻³¹ kg, m_p = 1.67x10⁻²⁷kg, e = -1.67x10^-19 C

0 Ckg^-1

4.46x10^-12 Ckg^-1

1 Ckg^-1

1.83x10¹¹ Ckg^-1

15 / 16

What is the the charge to mass ratio of a proton?

0 Ckg^-1

4.46x10^-12 Ckg^-1

1 Ckg^-1

1.83x10¹¹ Ckg^-1

16 / 16

What is the the charge to mass ratio of a neutron?

0 Ckg^-1

4.46x10^-12 Ckg^-1

1 Ckg^-1

1.83x10¹¹ Ckg^-1

Thank you for taking the quiz. Please fill in the fields below and you will receive your results in an email.

If you have been set this as homework, you should forward this email to your teacher as evidence you have completed the quiz.

If you don't receive your email please check your spam or junk folder.

Your score is

U8.1 – History of Atomic Models

History of Atomic Models

1 / 10

What radioactive source did Rutherford use?

2 / 10

What discovery did Chadwick make?

The nucleus

Orbiting electrons

Electron shells

The neutron

3 / 10

Which was not a conclusion from Rutherford's scattering experiment?

The nucleus contains the majority of the mass of the atom.

The nucleus has a positive charge.

Electrons orbit in shells.

The atom is mainly empty space.

4 / 10

What was JJ Thomson's Plum Pudding Model?

Neutral sphere with positive charges dotted throughout.

Neutral sphere with negative charges dotted throughout.

Negative sphere with positive charges dotted throughout.

Positive sphere with negative charges dotted throughout.

5 / 10

What discovery did Bohr make?

The nucleus.

Orbiting electrons.

Electron shells.

The neutron.

6 / 10

If Thomson's model was correct, what did Rutherford expect to see?

All particles deflect back.

All particles pass straight through.

All particles pass through with a small range of deflection.

All particles pass through with a large range of deflection.

7 / 10

What is true for the electron?

Charge is equal and opposite to the neutron.

Charge is equal and opposite to the proton.

Charge is equal to the neutron.

Charge is equal to the proton.

8 / 10

Dalton's atomic theory laid foundations for the future of the nuclear model, however which aspect was incorrect?

Each individual element is formed from a different type of atom.

Atoms from the same element are all alike.

Atoms cannot be broken up into smaller pieces.

Atoms of different elements can be distinguished from their masses.

9 / 10

Which aspect of electron theory did JJ Thompson not discover?

Electrons orbit the nucleus.

Electrons are negative.

The number of electrons equal the number of protons.

Electrons have a large charge to mass ratio.

10 / 10

TRIVIA: The term atom, comes from the Greek atomos (??????). This means __________.

small

void

indivisible

instantaneous

Thank you for taking the quiz. Please fill in the fields below and you will receive your results in an email.

If you have been set this as homework, you should forward this email to your teacher as evidence you have completed the quiz.

If you don't receive your email please check your spam or junk folder.

Your score is

Category: Nuclear and Particle Physics

History of Atomic Models

1 / 10

What radioactive source did Rutherford use?

2 / 10

What discovery did Chadwick make?

The nucleus

Orbiting electrons

Electron shells

The neutron

3 / 10

Which was not a conclusion from Rutherford's scattering experiment?

The nucleus contains the majority of the mass of the atom.

The nucleus has a positive charge.

Electrons orbit in shells.

The atom is mainly empty space.

4 / 10

What was JJ Thomson's Plum Pudding Model?

Neutral sphere with positive charges dotted throughout.

Neutral sphere with negative charges dotted throughout.

Negative sphere with positive charges dotted throughout.

Positive sphere with negative charges dotted throughout.

5 / 10

What discovery did Bohr make?

The nucleus.

Orbiting electrons.

Electron shells.

The neutron.

6 / 10

If Thomson's model was correct, what did Rutherford expect to see?

All particles deflect back.

All particles pass straight through.

All particles pass through with a small range of deflection.

All particles pass through with a large range of deflection.

7 / 10

What is true for the electron?

Charge is equal and opposite to the neutron.

Charge is equal and opposite to the proton.

Charge is equal to the neutron.

Charge is equal to the proton.

8 / 10

Dalton's atomic theory laid foundations for the future of the nuclear model, however which aspect was incorrect?

Each individual element is formed from a different type of atom.

Atoms from the same element are all alike.

Atoms cannot be broken up into smaller pieces.

Atoms of different elements can be distinguished from their masses.

9 / 10

Which aspect of electron theory did JJ Thompson not discover?

Electrons orbit the nucleus.

Electrons are negative.

The number of electrons equal the number of protons.

Electrons have a large charge to mass ratio.

10 / 10

TRIVIA: The term atom, comes from the Greek atomos (??????). This means __________.

small

void

indivisible

instantaneous

Thank you for taking the quiz. Please fill in the fields below and you will receive your results in an email.

If you have been set this as homework, you should forward this email to your teacher as evidence you have completed the quiz.

If you don't receive your email please check your spam or junk folder.

Your score is

Atomic Structure Basics

1 / 16

Where in the atom is the majority of the mass located?

Electron Orbits

Protons

Neutrons

Nucleus

2 / 16

What does the atomic number of an element represent?

Number of neutrons

Number of protons

Number of protons and neutrons

Number of protons, neutrons and electrons

3 / 16

How many electrons are in an atom of Helium?

4 / 16

How many protons are in an atom of Chromium?

5 / 16

How many neutrons are in an atom of bromine-79?

114

6 / 16

How many electrons are in an ion of Al²⁺?

7 / 16

How many protons are in an ion of N^3-?

8 / 16

State the charge on O^2- in Coulombs.

-3.2x10^-19 C

-1.6x10^-19 C

1.6x10^-19 C

3.2x10^-19 C

9 / 16

State the charge on Cr³⁺ in Coulombs.

-4.8x10^-19 C

0 C

4.8x10^-19 C

3..8x10^-18 C

10 / 16

State the charge on an atom of Li in Coulombs.

-1.6x10^-19 C

0 C

1.6x10^-19 C

4.8x10^-19 C

11 / 16

What is the atomic number of Manganese?

12 / 16

What is the mass of europium-153 in kilograms? m_e = 9.11x10⁻³¹ kg, m_p = 1.67x10⁻²⁷kg

2.5551x10^-25 kg

2.5557x10^-25 kg

2.5565x10^-25 kg

5.7393x10^-29

13 / 16

What is the mass of Sulfur-32^2- in kilograms? m_e = 9.11x10⁻³¹ kg, m_p = 1.67x10⁻²⁷kg

5.3440x10^-26 kg

5.3453x10^-26 kg

5.3455x10^-26 kg

5.3456x10^-26 kg

14 / 16

What is the the charge to mass ratio of an electron? m_e = 9.11x10⁻³¹ kg, m_p = 1.67x10⁻²⁷kg, e = -1.67x10^-19 C

0 Ckg^-1

4.46x10^-12 Ckg^-1

1 Ckg^-1

1.83x10¹¹ Ckg^-1

15 / 16

What is the the charge to mass ratio of a proton?

0 Ckg^-1

4.46x10^-12 Ckg^-1

1 Ckg^-1

1.83x10¹¹ Ckg^-1

16 / 16

What is the the charge to mass ratio of a neutron?

0 Ckg^-1

4.46x10^-12 Ckg^-1

1 Ckg^-1

1.83x10¹¹ Ckg^-1

Thank you for taking the quiz. Please fill in the fields below and you will receive your results in an email.

If you have been set this as homework, you should forward this email to your teacher as evidence you have completed the quiz.

If you don't receive your email please check your spam or junk folder.

Your score is

Antiparticles

1 / 12

The quark structure for a proton is uud. Select the quark structure for an antiproton.

uud

ddu

~~ddu~~

~~uud~~

2 / 12

A positron is __________.

a lepton

ddu

an antilepton

an antibaryon

3 / 12

What is 1 GeV/c² equivalent to?

1.78x10^-30 kg

1.78x10^-27 kg

1.60x10^-30 kg

1.60x10^-27 kg

4 / 12

Select the equation to calculate the minimum energy from pair production.

5 / 12

Which sentence is incorrect?

A particles corresponding antiparticle has the opposite charge to it's particle.

A particles corresponding antiparticle has the opposite mass number to it's particle.

A particles corresponding antiparticle has the opposite baryon number to it's particle.

A particles corresponding antiparticle has the opposite lepton number to it's particle.

6 / 12

A particle has a charge of -1 and a lepton number of +1. Would you describe it as a lepton or antilepton?

Lepton

Antilepton

Neither

7 / 12

Pair production is produced from ________.

Two colliding photons.

A single photon.

Two colliding baryons.

A single hadron.

8 / 12

What is the baryon number of an antiproton?

-1

N/A

9 / 12

What is the baryon number of an antineutrino?

-1

N/A

10 / 12

The opposite of pair production is ___________.

Absorption

Decay

Annihilation

Collison

11 / 12

Which antiparticle, from the following, has a charge of +1 and a baryon number of 0.

Proton

Antiproton

Antineutron

Positron

12 / 12

Which antiparticle, from the following, has a charge of 0 and a baryon number of 0.

Antineutron

Positron

Electron antineutrino

Thank you for taking the quiz. Please fill in the fields below and you will receive your results in an email.

If you have been set this as homework, you should forward this email to your teacher as evidence you have completed the quiz.

If you don't receive your email please check your spam or junk folder.

Your score is

Particle Physics Basics

1 / 11

Which particle is not a baryon?

π⁺

2 / 11

Which particle is the only stable baryon?

π⁺

3 / 11

Which particle is not a hadron?

e^-

π⁺

4 / 11

Which particle is not a lepton?

[1] e^-1

[2] ν_e

[3] μ⁺

[4] τ^-

e^-1

ν_e

μ⁺

τ^-

5 / 11

Which particle has a baryon number of 1?

π⁺

ν_μ

K^-

6 / 11

Which boson is not a gauge boson?

7 / 11

Hadrons are made from _______.

baryons

mesons

quarks

pions

8 / 11

Which particle has a baryon number of 0?

K⁰

9 / 11

Which row is correct for an atom of Carbon-13?

10 / 11

What is the baryon number for π⁻?

-1

11 / 11

Which statement is not true for neutrinos?

The mass of a neutrino is 0 (or almost 0)

A neutrino has a charge of -1

A neutrino has a lepton number of +1

The particles e-- and τ- all have their own neutrino

Thank you for taking the quiz. Please fill in the fields below and you will receive your results in an email.

If you have been set this as homework, you should forward this email to your teacher as evidence you have completed the quiz.

If you don't receive your email please check your spam or junk folder.

Your score is

The Quark Quiz

1 / 15

How many quarks are in a baryon?

2 / 15

How many quarks are in a meson?

3 / 15

How many generations of quarks are there?

4 / 15

Select the correct quark structure for: a proton.

uud

dud

ddu

5 / 15

Select the correct quark structure for: π⁺

6 / 15

Select the correct quark structure for: an anti-neutron.

uud

udd

~~dud~~

7 / 15

Select the correct quark structure for: K⁰

N/A

8 / 15

Select the correct quark structure for: e^-

dud

N/A

9 / 15

Select the correct quark structure for: π⁰

10 / 15

Select the correct quark structure for: an antiproton.

ddd

~~uud~~

~~ddd~~

~~uud~~

11 / 15

Select the correct quark structure for: Σ⁺

uus

uds

N/A

12 / 15

Select the correct quark structure for: π^-

dud

N/A

13 / 15

Select the correct quark structure for: v_e

[1] u

[2] d

[3] ud

[4] N/A

N/A

14 / 15

Select the correct quark structure for: Ω^-

[1] ssu

[2] udd

[3] sss

[4] ss

ssu

udd

sss

15 / 15

Select the correct quark structure for: K⁰

[1] sus

[2] ds

[3] us

[4] ss

sus

Thank you for taking the quiz. Please fill in the fields below and you will receive your results in an email.

If you have been set this as homework, you should forward this email to your teacher as evidence you have completed the quiz.

If you don't receive your email please check your spam or junk folder.

Your score is

U7.5 – Alternating Currents

Alternating Currents

1 / 10

What does AC stand for?

Actual Current

A Current

Alternating Current

Alternative Current

2 / 10

A step up transformer...

Increases the current

Increases the voltage

Increases the cost of producing electricity

3 / 10

A step down transformer...

Decreases the current

Decreases the voltage

Decreases the cost of producing electricity

4 / 10

What is the number of turns on the primary coil of a transformer if it's input voltage is 720V and it's output voltage is 245 V with 350 turns on the secondary coil?

252 turns

504 turns

1029 turns

2058 turns

5 / 10

What is the input current of a transformer if has 535 turns on it's primary coil and it's output current is 2.0 A with 50 turns on the secondary coil?

0.19 A

2.1 A

14.3 A

21.4 A

6 / 10

If a transformer has 400 turns on it's primary coil, and 200 turns on it's secondary coil it is...

A step up transformer

A step down transformer

7 / 10

The frequency of UK mains ac is 50 Hz, what is it's time period?

0.02 s

0.05 s

2 s

5 s

8 / 10

Using this diagram, which arrow is measuring the peak voltage?

9 / 10

A wire carries an alternating current of peak value 2 A. Calculate the root mean square value the current.

0.7 A

1.4 A

2 A

10 / 10

An ac supply has an V₀ value of 3 V and a root mean square current of 0.52 A. Calculate the root mean square power of the supply.

0.17 W

0.75 W

1.1 W

1.56 W

Thank you for taking the quiz. Please fill in the fields below and you will receive your results in an email.

If you have been set this as homework, you should forward this email to your teacher as evidence you have completed the quiz.

If you don't receive your email please check your spam or junk folder.

Your score is

U7.4 – Electromagnetic Induction

Electromagnetic Induction

1 / 10

Magnetic flux density is...

the area of a magnetic field

the strength of a magnetic field

a constant

2 / 10

How would you induce e.m.f in a flat coil?

Hold a magnet still in the coil.

Move a magnet in and out of the coil.

Hold a magnet still outside of the coil.

3 / 10

A coil with N turns has a flux density of B. What would be the flux density if you doubled the turns?

B/2

B^2

4 / 10

Calculate the magnetic flux passing through a coil of diameter 350 mm if the magnetic flux density is 240 mT and the angle between the normal to the plane of the coil and the direction of the magnetic field is 56°.

0.023 Wb

0.072 Wb

0.079 Wb

7.88x10⁷ Wb

5 / 10

Which statement describes Faraday's Law?

The induced e.m.f. is inversely proportional to the rate of change of flux linkage.

The induced e.m.f. is directly proportional to the rate of change of flux linkage.

The induced e.m.f. is always in a direction to oppose the change that causes it.

The induced e.m.f. is always in the same direction to the change that causes it.

6 / 10

A 40 cm metal rod moves through a uniform magnetic field in a perpendicular motion at a constant velocity of 0.24 ms^-1 for 15 seconds. The magnetic field has a magnetic flux density of 1.1 T. Calculate the the magnitude of the e.m.f induced.

1.584 V

0.322 V

0.106 V

0.483 V

7 / 10

A metal rod cuts Φ Wb of flux in 2 seconds and induces an e.m.f. of E. What would be the value of E if twice the flux was cut in a quarter of the time?

0.5E

8 / 10

Which statement describes Lenz's Law?

The induced e.m.f. is inversely proportional to the rate of change of flux linkage.

The induced e.m.f. is directly proportional to the rate of change of flux linkage.

The induced e.m.f. is always in a direction to oppose the change that causes it.

The induced e.m.f. is always in the same direction to the change that causes it.

9 / 10

Magnetic flux is...

Equal to the product of B and the number of turns in the coil placed within the magnetic field.

A scalar value, which represents the amount of B flowing through a cross-sectional area, bounded by a closed loop.

A vector field, indicating the strength of the magnetic field at a given point in a medium.

The strength of a magnetic field.

10 / 10

Magnetic flux linkage is...

Equal to the product of B and the number of turns in the coil placed within the magnetic field.

A scalar value, which represents the amount of B flowing through a cross-sectional area, bounded by a closed loop.

A vector field, indicating the strength of the magnetic field at a given point in a medium.

The strength of a magnetic field.

Thank you for taking the quiz. Please fill in the fields below and you will receive your results in an email.

If you have been set this as homework, you should forward this email to your teacher as evidence you have completed the quiz.

If you don't receive your email please check your spam or junk folder.

Your score is

U7.3 – Magnetic Fields & Forces

Magnetic Fields and Forces

1 / 13

Which way do magnetic field lines run?

Centre of magnet to North Pole

North Pole to South Pole

Centre of magnet to South Pole

South Pole to North Pole

2 / 13

Select the false statement:

The closer together the lines, the stronger the magnetic field.

The lines are closer together away from the poles.

The closer together the lines, the greater the force experienced in the field by a charged particle.

As the field lines get closer, they still will never cross.

3 / 13

Look at these diagrams, which current carrying wire will have the largest magnetic field?

Wire A

Wire B

Wire C

Can't tell from the image

4 / 13

Which diagram(s) have a magnetic field that has a clockwise direction?

Wire A

Wire B

Wire C

Wire A and B

5 / 13

Which diagram has the largest magnetic flux?

Wire A

Wire B

Wire C

Can't tell from the image

6 / 13

A current carrying wire is placed in a magnetic field as shown in this diagram. Which way is the resultant force acting?

7 / 13

The current is now reversed, which way is the resultant force now acting?

8 / 13

A 2.5N magnetic force acts on a 475m wire that is perpendicular to a 0.50 T magnetic field. Calculate the current in the wire.

0.008 A

0.011 A

0.016 A

0.023 A

9 / 13

There is a magnetic force of 2N on a 15 cm segment of wire carrying 4.5A. Calculate magnetic flux density?

0.03 T

1.35 T

2.96 T

29.6 T

10 / 13

In which diagram is no resultant force experienced?

11 / 13

A 23 cm wire carrying 3 mA of current is placed at an angle of 47° to the field lines of a uniform magnetic field of with a magnetic flux density of 0.75 T. Calculate the resultant force experienced by the wire.

4.1x10^-2 N

3.78 x10^-4 N

2.43x10^-2 N

3.52x10^-4 N

12 / 13

A wire has a radius of 2 mm, a mass of 14g and a density of 8960 kg m^-3 and carries a current of 2.5 A. Calculate the force experience by the wire when it is placed at right angles to a horizontal uniform magnetic field of flux density 4.3 x 10^-4 T.

17.5 N

1.33x10^-4 N

3.97 N

1.68x10^-5 N

13 / 13

An Alpha particle is travelling through a uniform magnetic field of flux density 4.3x10^-3 T at an angle of 32° to the field lines. There is a force of 1.76 x10^-15 N acting on the Alpha particle. Calculate the velocity of the Alpha particle.

2.4x10⁶ ms^-1

4.8x10⁶ ms^-1

4.1x10⁸ ms^-1

3.0x10⁸ ms^-1

Thank you for taking the quiz. Please fill in the fields below and you will receive your results in an email.

If you have been set this as homework, you should forward this email to your teacher as evidence you have completed the quiz.

If you don't receive your email please check your spam or junk folder.

Your score is

U7.2 – Capacitors

Capacitors

1 / 16

What unit is capacitance measured in?

Coulombs²

Farads

Volts

Farquaads

2 / 16

A 300μF capacitor is charged fully to 3.2 μC, calculate the voltage of the battery that was used to charge the capacitor?

0.012 V

0.01 V

1.2 V

1 V

3 / 16

The p.d. across a capacitor is ________ to the charge stored on it.

opposite

inversely square

irrelevant

proportional

4 / 16

Which of these equations is not a correct expression of the energy stored by a capacitor?

Expression A

Expression B

Expression C

Expression D

5 / 16

Which graph best shows the charging of a capacitor?

Graph A

Graph B

Graph C

Graph D

6 / 16

Which graph best shows the discharging of a capacitor?

Graph A

Graph B

Graph C

Graph D

7 / 16

A 200 μF capacitor is charged fully to 1.6 μC, calculate the energy stored when it is fully charged.

1.25x10^-6 J

6x10^-9 J

8x10^-3 J

5.1x10^-4 J

8 / 16

A capacitor is charged fully to 300 nF with a battery of 0.5 V, calculate the energy stored when it is fully charged.

6x10¹¹ J

1.6x10⁶ J

3.7x10^-8 J

7.5x10^-8 J

9 / 16

A 200 μF capacitor is charged fully with a 3 V battery, calculate the energy stored when it is fully charged.

3x10^-4 J

0.003 J

0.015 J

6x10^-4 J

10 / 16

The potential difference across the plates of a capacitor is decreased by a half. There is no change to the capacitance of the capacitor. Which of the following statements is true?

The energy stored by the capacitor will reduce by half.

The energy stored by the capacitor will quadruple.

The energy stored by the capacitor will double.

The energy of the capacitor will reduce by a quarter.

11 / 16

A capacitor with capacitance C is charged to a potential difference of V. The energy stored on the charged capacitor is W. What would be the energy stored if the potential difference was 4V?

2 W

4 W

8 W

16 W

12 / 16

What piece of equipment could you use to measure and record the potential difference across the capacitor over time?

Datalogger and ammeter

Oscilloscope

Cathode ray tube

Lux Meter

13 / 16

The time taken to discharge (or charge) a capacitor depends on:

The capacitance of the capacitor.

The resistance of the circuit.

The capacitance of the capacitor and the resistance of the circuit.

None of the above.

14 / 16

In this equation to calculate the charge remaining on the capacitor, what does Q₀ represent?

The charge of the capacitor when it's fully charged.

The charge of the capacitor before it discharges.

The lowest amount of charge the capacitor can hold.

15 / 16

What is meant by the time constant of a resistor-capacitor circuit in terms of potential difference?

The time taken for the potential difference to decrease by 50%

The time taken for the for the potential difference to reduce by 37%

The time taken for the for the potential difference to reduce by 63%

The time taken for the for the potential difference to reduce by 100%

16 / 16

Which equation shows the natural log being taken of the discharge equation for charge?

Equation A

Equation B

Equation C

Equation D

Thank you for taking the quiz. Please fill in the fields below and you will receive your results in an email.

If you have been set this as homework, you should forward this email to your teacher as evidence you have completed the quiz.

If you don't receive your email please check your spam or junk folder.

Your score is

U7.1 – Electric Fields

Electric Fields

1 / 13

Electric field originates at...

A positive charge

A negative charge

Either a positive or negative charge

Where there is zero charge

2 / 13

Coulomb's law states:

The closer the charges, the stronger the force between them.

The closer the charges, the weaker the force between them.

A point charge will always repel another point charge in a vacuum.

A point charge will always attract another point charge in a vacuum.

3 / 13

Calculate the force between a +3pC point charge and a +2.5pC point charge which are a distance of 3nm apart.

7.5x10³ N

7.5x10⁹ N

2.2x10¹⁰ N

2.2x10^-5 N

4 / 13

The force between two point charges has been calculated as -6.8x10⁴ Which of the following statement is correct?

The charges are alike and the force is repulsive.

The charges are opposite and the force is attractive.

The charges are opposite and the force is repulsive.

The charges are alike and the force is attractive.

5 / 13

Electric field strength...

Is a vector pointing in the direction a negative charge would move.

Is a vector pointing in the direction a positive charge would move.

Is a vector pointing in the direction a neutral charge would move.

Has no direction so cannot be a vector.

6 / 13

Which graph best represents the electric field strength of a radial field?

Graph A

Graph B

Graph C

Graph D

7 / 13

Calculate the electric field strength due to. point charge of 15.0 μm at a distance of 44 mm from the charge.

3.1x10⁶

3.0x10⁶

3.1x10³

3.0x10³

8 / 13

A uniform field can be produced by connecting...

Two adjacent plates to the same pole of a battery.

Two parallel plates to the same pole of a battery.

Two adjacent plates to opposite poles of a battery.

Two parallel plates to opposite poles of a battery.

9 / 13

Calculate potential difference of two plates that are 3 mm apart that are producing a field strength of 4x10⁵.

7500 V

12x10² V

1.2x10³ V

12x10^-2 V

10 / 13

In this equation, what does the "V" represent?

The electric potential energy that a unit positive charge would have at infinity.

The electric potential energy that a unit positive charge would have at a given point.

The electric potential energy that a unit negative charge would have at infinity.

The electric potential energy that a unit negative charge would have at a given point.

11 / 13

In the same equation, what is "Q" measured in?

NC^-1

Vm^-1

12 / 13

Equipotentials show...

All points of equal potential on a rugby field

All points of equal potential in a radial electric field

All points of equal potential in a uniform electric field

All point of equal potential in any electric field

13 / 13

A potential difference V is applied across two parallel plates. A particle exactly halfway between the two plates at point A experiences an electric force F. The electron moves to point B which is halfway between point A and the right-hand plate. Which of the following is the electric force experienced by the electron at Y? [image]

F/4

F/2

Thank you for taking the quiz. Please fill in the fields below and you will receive your results in an email.

If you have been set this as homework, you should forward this email to your teacher as evidence you have completed the quiz.

If you don't receive your email please check your spam or junk folder.

Your score is

Posts pagination

← Newer Posts 1 2 3 4 … 9 Older Posts →

Recent Posts

Categories