Ans : A.C is the abbreviation of an alternating current which flows to and from in a circuit in alternate direction periodically with the variation of its magnitude in regular manner that after reaching a maximum in one direction decreases to zero, finally reversing and reaching a maximum in the opposite direction decreases to zero again the cycle of pulsation being repeated continuously.
D.C. is the abbreviation of a direct current which flows in one direction only and which does not have any appreciable pulsation in its magnitude.
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