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Calculating Energy & Power in Electric Circuits

Instructions:

Choose an answer and hit 'next'. You will receive your score and answers at the end.

question 1 of 3

Which formula will you use to calculate the power of an electric circuit if you are given the resistance and the voltage?

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1. What is the power of an electric circuit that is running on 1.2 amps and 5 volts?

2. What is the power of an electric circuit that is running on 2 amps with a resistance of 32 ohms?

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About This Quiz & Worksheet

This quiz and worksheet assesses your understanding of electric currents in relation to calculating the energy and power in electrical circuits. You'll review your knowledge of important formulas involved with these types of calculations as well.

Quiz & Worksheet Goals

This quiz and worksheet tests your understanding of:

  • The formula to use if you are given the resistance and the voltage
  • Solving problems for the amount of power in an electric circuit
  • Ohm's Law

Skills Practiced

  • Information recall - see if you can remember the formula to use if you have the resistance and voltage
  • Problem solving - use your knowledge of how to find the energy and power in electric circuits to solve problems correctly
  • Knowledge application - access your knowledge of Ohm's Law and answer a question about it

Additional Learning

Take a more detailed look at this topic in the lesson titled Calculating Energy & Power in Electric Circuits. In this lesson, you will find more information about:

  • Defining an electric circuit
  • Understanding electric power
  • Two ways to calculate the power
  • Sample problems of both ways to solve
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