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A DC ammeter cannot measure alternating ...

A `DC` ammeter cannot measure alternating current because

A

A.C. current pass through d.C. ammeter

B

A.C change direction

C

average value of current for complete cycle is zero

D

D.C ammeter will get damaged

Text Solution

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The correct Answer is:
3
The full cycle of alternating current consists of two half cycles. For one half, current is positive and for second half, current is negative. There-fore, for an a.c. cycle, the net value of current average out zero. While for the half cycle, the value of current is different at different points. Hence, the alternating current cannot be measured by D.C. ammeter
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