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Alternating current cannot be measured by d.c ammeter because: 
  • a)
    d.c ammeter get damaged
  • b)
    average value of current over a complete cycle is zero
  • c)
    a.c cannot pass through d.c ammeter
  • d)
    a.c changes directions periodically
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Alternating current cannot be measured by d.c ammeter because:a)d.c am...
  • In a dc ammeter, a coil is free to rotate in the magnetic field of a fixed magnet.
  • If an alternating current is passed through such a coil, the torque will reverse its direction each time the current changes direction, and the average value of the torque will be zero.
  • Hence, the average current value over a complete cycle is zero and the alternating current cannot be measured by the DC ammeter.
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Alternating current cannot be measured by d.c ammeter because:a)d.c ammeter get damagedb)average value of current over a complete cycle is zeroc)a.c cannot pass through d.c ammeterd)a.c changes directions periodicallyCorrect answer is option 'B'. Can you explain this answer? for EmSAT Achieve 2025 is part of EmSAT Achieve preparation. The Question and answers have been prepared according to the EmSAT Achieve exam syllabus. Information about Alternating current cannot be measured by d.c ammeter because:a)d.c ammeter get damagedb)average value of current over a complete cycle is zeroc)a.c cannot pass through d.c ammeterd)a.c changes directions periodicallyCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for EmSAT Achieve 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Alternating current cannot be measured by d.c ammeter because:a)d.c ammeter get damagedb)average value of current over a complete cycle is zeroc)a.c cannot pass through d.c ammeterd)a.c changes directions periodicallyCorrect answer is option 'B'. Can you explain this answer?.
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