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

Calculate the current at A2 in the circuit shown.

3 / 10

The current at A1 is 4 A and the current at A2 is 1 A. Select the current at A3.

4 / 10

The current at A1 is 4 A and the current at A2 is 1 A. Select the current at A4.

5 / 10

The electromotive force, or e.m.f. (Ɛ), is measured in which unit?

6 / 10

Laura Kenny can reach 1070 W cycling on her bike. If she was a 12 V battery, what would her current be?

7 / 10

Which graph best represents the resistance of an NTC thermistor?

8 / 10

A head torch used on a D of E expedition is rated at 3W with a 3.7 V battery, how many electrons pass through in the 5 minutes it takes for a return trip to campsite bathroom at night?

9 / 10

Potential difference is...

10 / 10

The current in a circuit depends on the mean drift velocity of the charge carriers. This can be defined by this equation, what is the current if the number of charge carriers doubles?

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