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What is the Charge on the Capacitor? - Physics

Sum

Electrostatic energy of 3·5 x 10-4 J is stored in a capacitor at 700 V. What is the charge on the capacitor?

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Solution

U = 3.5 × 10-4J, V =700V 

U =`1/2` Q V

`Q=(2U)/V`

`=(2xx3.5xx10^(-4))/700`

`Q=10^-6C`

Concept: Energy of Charged Condenser
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