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In a circuit, the value of the alternati...

In a circuit, the value of the alternating current is measured by hot wire ammeter as `10` ammeter. Its peak value will be

A

`10 A`

B

`20 A`

C

`14.14 A`

D

`7.07 A`

Text Solution

Verified by Experts

The correct Answer is:
C
Hot wire ammeter reads `rms` value of current. Hence its peak value `=i_(rms)xxsqrt(2)=14.14 amp`
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Knowledge Check

  • Alternating current cannot be measured by a d.c. ammeter because

    A
    a.c. cannot pass through d.c. ammeter.
    B
    a.c. changes its direction.
    C
    average value of a.c. for complete cycle is zero.
    D
    a.c. is virtual

  • Alternating current can not be measured by D.C. Ammeter because

    A
    Average value of current for current for complete cycle is zero
    B
    AC changes direction
    C
    A.C can not pass through D.C Ammeter will get damaged.
    D
    None of these

  • A DC ammeter cannot measure alternating current because

    A
    `AC` changes its direction
    B
    `DC` instruments will measure the average value
    C
    `AC` can damage the `DC` instrument
    D
    `AC` produces more heat

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