Question

Distinguish between d.c. and a.c.

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Answer

The differences between d.c. and a.c are as follows —

Direct current (d.c.) Alternating current (a.c.)
Direct current (d.c) is a current of constant magnitude flowing in one direction Alternating current (a.c.) is the current for which both the magnitude and direction change with time.
The cell or a battery is a source of d.c. current. The mains in our house or an a.c. generator are the source of alternating current (a.c.).

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