Electric Circuits Random Retrieval

This quiz contains all the questions in the Electric Circuits section. The website will pick 10 questions at random.

1 / 10

Select the effect on V_out when the light intensity decreases on this circuit.

V_out increases.

V_out decreases.

V_out remains constant.

2 / 10

Calculate the current at A₁ in the circuit shown.

0.21 A

0.51 A

0.79 A

1.37 A

3 / 10

What is Ɛ measured in terms of SI base units?

m² kg s^-3 A^-1

m² kg s^-2

J s^-1 A^-1

m^-1 kg s^-2

4 / 10

A 12 Ω and a 10 Ω resistor are connected in series with a battery of e.m.f. 6 V and internal resistance 2 Ω. Calculate the potential difference over the battery.

0.25 V

2.5 V

5.5 V

8.5 V

5 / 10

An electric motor is used to raise a load. When the switch is closed, the ammeter reads 94 mA and the motor raises a 568 g load through a height of 174 cm in 25 seconds. Calculate the potential difference of the circuit assuming it is 100% efficient. g = 9.81 N kg⁻¹

9.7 V

36.8 V

103.1 V

109.7 V

6 / 10

Which graph best represents the I-V characteristic graph of a NTC thermistor?

A

B

C

D

7 / 10

Which graph best represents the I-V characteristic graph of a metallic conductor at a constant temperature?

A

B

C

D

8 / 10

Which graph best represents the I-V characteristic graph of a filament lamp?

A

B

C

D

9 / 10

The unit for resistance is Ohms, what is this in SI base units?

kg s^-2 A^-1

m^-2 kg^-1 s⁴ A²

m² kg s^-3 A^-1

m² kg s^-3 A^-2

10 / 10

What would be the n value of a perfect insulator?

0

Very small

e

k

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