Question

Derive an expression for energy stored in a capacitor

Answer 1

Answer:

<

Explanation:

Consider a capacitor with the capacitance ‘C’ ,which is connected to the battery of emf ‘V’ .If ‘dq’ charge is transferred from one plate to other,then the work done ‘dW’ will be:

dW =V dq

This work done is stored in the form of electric potential energy ‘dU’

dU =V dq

When the capacitor is fully charged then the total energy stored is: