A) AC cannot pass through DC ammeter
B) AC changes direction
C) average value of current for complete cycle is zero
D) DC ammeter will get damaged
Correct Answer: C
Solution :
The full cycle of alternating current consists of two half cycles. For one half, current is positive and for second half, current is negative. Therefore, for an ac cycle, the net value of current average out to zero. While the DC ammeter, read the average value. Hence, the alternating current cannot DC measured by DC ammeter.
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