Question
A 165 μF165 \textrm{ }\mu\textrm{F} capacitor is used in conjunction with a motor. How much energy is stored in it when 119 V is applied?
Question by OpenStax is licensed under CC BY 4.0
Final Answer

1.17 J1.17 \textrm{ J}

Solution video

OpenStax College Physics for AP® Courses, Chapter 19, Problem 65 (Problems & Exercises)

OpenStax College Physics, Chapter 19, Problem 65 (PE) video thumbnail

In order to watch this solution you need to have a subscription.

Start free trial Log in
vote with a rating of votes with an average rating of .

Calculator Screenshots

  • OpenStax College Physics, Chapter 19, Problem 65 (PE) calculator screenshot 1
Video Transcript
This is College Physics Answers with Shaun Dychko. The amount of energy stored in the capacitor is the capacitance multiplied by the voltage applied squared divided by two. So, that's 165 microfarads, which is times ten to the minus six farads, times 119 volts squared, divided by two, gives 1.17 Joules of energy. So, that's the amount of work that the electric motor could do using this capacitor, by the way.