Ohm's Law quiz

Take this Ohm's law quiz to see how well you understand Ohm's law. After completing this quiz with 100% accuracy, you will know exactly what the Ohm's law is and how to use it to solve problems. You will not need to use a paper and pencil to complete this quiz.

First, read the lesson about Ohm's law and then take this quiz.

Objective of the Ohm's law quiz:

  • Identify the Ohm's law formula
  • Know what a voltage source is
  • Know what an electric resistance is
  • Use Ohm's law to find the current or the voltage
Test your knowledge with the quiz below:

1. Choose the correct equation for Ohm's law

I = R/V
R = VI
I = V/R
O = RI.

2. An example of a device that is not a voltage source is

Voltage relays
Electrical outlets.

3. By analogy, a voltage source is like

a water pump
an air pump
a heart
All the above

4. The voltage of a AAA battery is likely to be

20 volts
2 volts
8 volts
None of the above

5. The job of an electric resistance is to

increase the voltage by resisting the current
decrease the voltage by resisting the current
decrease the current by resisting the voltage
None of the above

6. In which material you will expect the current to flow more easily?

1.5 mm thick and 10 m long
1.6 mm thick and 9.1 m long
1.45 mm thick and 9 m long
1.60 mm thick and 9 m long

7. The positive terminal of a voltage source will attract electrons because

electrons have negative charges.
electrons have positive charges
electrons have positive affinity with the voltage source
electrons have negative affinity with the voltage source

8. What is the current of a circuit flowing through a 50 Ohms resistor and powered by a voltage source of 100 volts?

2 volts
1 A
2 A
Not enough information

9. If the current flowing through a 6 Ohms resistor is 2 A, what is voltage of the circuit?

24 volts
8 volts
3 volts
12 volts

10. An example of DC is a

car battery
home outlet
car alternator
direct current

Score =

I strongly recommend you try your very best to complete this Ohm's law quiz on your own. Resist the urge to see the answers. Review the lesson about Ohm's law again. However, if you still cannot get 100% on your own, click here to see the answers.

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