An AC ammeter reads current i in an AC circuit. If a DC ammeter is used in its place, its reading is:
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Question

An AC ammeter reads current i in an AC circuit. If a DC ammeter is used in its place, its reading is:

G1 Physics · Accepted Answer

A DC ammeter responds to the average current. The average value of a sinusoidal AC current over one complete cycle is zero. Therefore the DC ammeter reads 0, option D.