Electric Circuits Answers

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If voltage in a circuit is constant, the current can be cut to half of its original value by changing the resistance to ________ its original value.

one-fourth

one-half

two times

four times

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Jaipal measures a circuit at 1.2 A and 24 . Using Ohm’s law, what can he calculate for the circuit?

current (C)

current (I)

voltage (V)

voltage (A)

A light bulb has a resistance of 360 . What is the current in the bulb when it has a potential difference of 120 V across it?

0.33 A

3 A

480 A

43,200 A

Which symbol and unit of measurement are used for electric current?

symbol: A; unit: I

symbol: C; unit: A

symbol: I; unit: C

symbol: I; unit: A

When the resistance in a circuit remains constant, how are the voltage and current related?

The current doubles when the voltage doubles because they are directly proportional.

The current doubles when the voltage doubles because they are inversely proportional.

The current is cut in half when the voltage doubles because they are directly proportional.

The current is cut in half when the voltage doubles because they are inversely proportional.

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