A large parallel plate capacitor has plate separation of 0.96 cm and plate area of 268 cm2. The capacitor is connected across a voltage of 22.4 V and has air between the plates. How much work is done on the capacitor as the plate separation is increased to 1.92 cm?
Could you please help with this question? I keep getting the same answer and I'm not sure of any other way to solve it.