Engineering Board Exam Reviewer · Time Response of Reactive Circuits · medium

How much energy is stored in a 100, F capacitor charged to 24 V?

  1. 57.6 mJ
  2. 28.8 mJ
  3. 1.2 mJ
  4. 2.4 mJ

Answer

B. 28.8 mJ

Solution

W= 12CV2= 12(100×10-6)(24)2=28.8 mJ.

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