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Ohm’s Law Quiz
1. _____ is a difference in electric potential energy.
2. True or false: A source of voltage is required for an electric current to flow.
3. The opposition of matter to the flow of electric current is called _____.
4. The amount of current flowing through a wire will be less when there is greater
a) voltage.
b) resistance.
c) electric potential energy.
d) two of the above
5. Which equation represents Ohm’s law?
a) Current = Voltage x Resistance
b) Current = Voltage/Resistance
c) Current = Resistance/Voltage
d) none of the above
6. The SI unit for electric current is the _____.
7. Explain Ohm’s law by comparing current flowing through a wire to water flowing
through a hose.
8. True or false: Ohm’s law can be used to calculate current when voltage and resistance
are known.
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9. Assume that an electric wire is connected to a 9-volt battery and the wire has a
resistance of 3 ohms. How much current is flowing through the wire?
a) 27 amps
b) 12 amps
c) 9 amps
d) 3 amps
10. A wire with 3 ohms of resistance is connected to a battery. If 4 amps of current are
flowing through the wire, what is the voltage of the battery?
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