What is the energy stored on a capacitor which has stored charge of 15.0 mC (on each plate, opposite signs for each) and a voltage of 11e3 V?

82.5 J

Explanation:

Energy stored on a capacitor = CV²/2

But Q = CV

Energy = QV/2

Q = 15.0 mC = 0.015 C

V = 11 × 10³ V = 11000 V

Energy = 0.015 × 11000/2 = 82.5 J

Therefore, the energy stored on a capacitor which has stored charge of 15.0 mC (on each plate, opposite signs for each) and a voltage of 11e3 V is 82.5 J

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