Electric Circuits Random Retrieval

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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

The unit of resistivity is the ohm-metre. A correct alternative unit is:

2 / 10

The unit of resistance is the ohm. A correct alternative unit is:

3 / 10

The unit of current is the ampere. A correct alternative unit is:

4 / 10

Calculate the current at A1 in the circuit shown.

5 / 10

Calculate the total resistance of the circuit shown.

6 / 10

A battery with internal resistance 0.4 Ω and an e.m.f. of 15 V powers a portable speaker with a resistance of 9 Ω. Calculate the voltage across the speaker when it is being used.

7 / 10

A 75 watt light bulb is left ON for 24 hours, calculate the total energy transferred.

8 / 10

Which graph best represents the resistance of an NTC thermistor?

9 / 10

If the area (A) of a material was to doubled, what would the resistance be?

10 / 10

The charge on an electron is 1.60x10-19 C. Calculate how many electrons are needed to create a charge of 4.2 C.

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