3.5 THE CAPACITOR
The physical basis of the two-terminal element, called Capacitor, had been dealt with in Chap. 1 in detail. We revise it briefly.
Sources of e.m.f. present in circuits establish potential differences across various physical devices connected by creating charge distributions in them. This charge distribution present in any physical device involved in a circuit is static in the case of DC circuits. And it is quasi-static in the case of circuits containing time-varying sources of e.m.f. Therefore, there will be charge segregation and charge storage between any two nodes supporting a potential difference in a circuit. The ratio of charge to potential difference, i.e., the charge required to be present at the terminals of a device ...
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