Chapter 17, Problem 13Q

To determine

The amount of energy a fixed capacitor stores if the voltage across it is doubled,

      (a)Doubles

      (b)Halved

      (c)Quadrupled

      (d)Unaffected

      (e)None of these

Answer to Problem 13Q

Solution:

Option C is the correct answer.

Explanation of Solution

We have potential energy of a capacitor given by, $PE=\frac{1}{2}C{V}^2$,where C is the capacitance and V is the voltage.

If voltage is doubled, PE will become four times.