Energy stored in capacitor derivation (why it's not QV) | Electrostatic potential | Khan Academy
Channel: Khan Academy India - English
Date: 2021-03-11

To calculate the energy stored in a capacitor, we calculate the work done in separating the charges. As we separate more charges, it takes more work to separate even more, due to increased repulsion. Hence, to find the total work done, one needs to integrate. Let's see how we can set up this integral and find the total work done. 

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Created by Mahesh Shenoy