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

Select the effect on Vout when the surrounding temperature increases for circuit.

2 / 10

Calculate the current at A1 in the circuit shown.

3 / 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.

4 / 10

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

5 / 10

A light bulb of resistance 600 Ω is powered by a 230 V supply. Calculate the power rating of the bulb.

6 / 10

Which graph best represents the resistance of an NTC thermistor?

7 / 10

Select the missing word: "The more charge carries available, the greater the current therefore the resistance ___________.

8 / 10

Copper has a resistivity of 1.724x10-8 Ω m at 20 °C. Calculate the resistance of a piece of copper wire that measures 40 cm long and has a diameter of 0.8 mm.

9 / 10

How should you connect a potential difference measuring piece of equipment in a circuit?

10 / 10

The unit for charge is Coulombs, what is this in SI base units?

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