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

Select a use for this circuit when the temperature fluctuates. Assume Vout is the location of external circuitry

3 / 10

Select a use for this circuit when the temperature fluctuates. Assume Vout is the location of external circuitry

4 / 10

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

5 / 10

Calculate the potential difference at V1 in the circuit shown.

6 / 10

A battery of e.m.f. E, with an internal resistance, r, was connected in series with a variable resistor, R and an ammeter. Looking at the readings from the above table, calculate the e.m.f. of the battery.

7 / 10

The unit for power is the Watt, what is this in SI base units?

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

A resistor in a circuit has a current through it of 0.20 A when the potential difference across it is 15 V. Calculate the resistance of the resistor.

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 cross sectional area of the material doubles?

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