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 power is the watt. A correct alternative unit is:

2 / 10

The unit of potential difference is the volt. A correct alternative unit is:

3 / 10

Calculate the potential difference at V1 in the circuit shown.

4 / 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.

5 / 10

Which of these expressions is not a correct expression for calculating the electrical power of a circuit?

6 / 10

Which of these circuit symbols represents a thermistor?

7 / 10

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

8 / 10

In this diagram, what should the potential difference of the missing value be?

9 / 10

Calculate the the time taken for a current of 5.2 mA to reach a charge of 25 C.

10 / 10

Which way does current flow in a circuit?

 

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