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Domestic electric circuits and safety precautions - class-X

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Multiple Choice

Alternating current can not be measured by $D.C$. ammeter because 

  1. $A.C$. cannot pass through $D.C$.
  2. $A.C$. changes direction
  3. average value of current for complete cycle is zero
  4. $D.C$. ammeter will get damaged.
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