If the voltage on a capacitor is doubled, then the energy stored by the capacitor

Name: If the voltage on a capacitor is doubled, then the energy stored by the capacitor
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Quizplus · Accepted Answer

The energy stored in a capacitor is given by the formula $ E = \frac{1}{2} C V^2 $. If the voltage $ V $ is doubled, the energy becomes $ \frac{1}{2} C (2V)^2 = 2^2 \times \frac{1}{2} C V^2 = 4 \times \frac{1}{2} C V^2 $, which means the energy quadruples.

If the Voltage on a Capacitor Is Doubled, Then the Energy