MHT CET Physics question

Alternating current cannot be measured by D.C. ammeter because [AIEEE 2004]

(A)A.C. cannot pass through D.C. ammeter
(B)Average value of complete cycle is zeroCorrect
(C)A.C. is virtual
(D)A.C. changes its direction

Answer: (B)

Solution

A D.C. ammeter shows the average current, which is zero over a complete A.C. cycle, so the pointer cannot give a steady reading; A.C. does pass through

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Question ID VK-082055