Question

Explain why capacitance C depends neither on the stored charge q nor on the potential difference V between the plates of a capacitor. O The net charge on a capacitor is zero, and therefore the potential difference V cancels. O Capacitance is determined only by the physical properties of the capacitor. 。The stored charge q is inversely proportional to the potential difference V. O The stored charge q and the potential difference V are independent of the size and shape of the capacitor.

Answer 1

The expression for the capacitance of the capacitor is, C 04 Here, E is the permittivity of the free space, A is the area of the plates and d is the distance between the plates. Hence, from the above equation, the capacitance is independent of charge and the voltage. The capacitance is also defined as, The ratio is constant. It the voltage in the capacitor is increased, the voltage also increases, to keep the ratio constant. Hence, the capacitance of the capacitor is determined by the physical characteristics of the 0 capacitor Hence, the correct option is second.