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When 100" volt" dc is applied across a c...

When `100" volt" dc` is applied across a coil, a current of `1 amp` flows through it, when `100 V` ac of `50 Hz` is applied to the same coil, only 0.5 amp flows. Calculate the resistance and inductance of the coil.

Text Solution

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`100Omega, (sqrt3//pi) H`
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Knowledge Check

  • When 100 V dc is applied across a coil, a current of 1A flows through it and when 100 V ac of 50 Hz is applied to the same coil, only 0.5 flows The resistance is

    A
    `200 Omega`
    B
    `50 Omega`
    C
    `100 Omega`
    D
    `50 sqrt(3) Omega`

  • When 100 V dc is applied across a coil, a current of 1A flows through it and when 100 V ac of 50 Hz is applied to the same coil, only 0.5 flows The inductance of coil is

    A
    5.5 H
    B
    `3//(pi)H`
    C
    `sqrt(3)//(pi)H`
    D
    `2.5 H`

  • When 100V dc is applied across a coil a current of 1 A flows through it When 100V ac of 50Hz is applied across the same coil only 0.5A flows The resistance and inductance of the coil are ( take pi^(2) =10) .

    A
    `50 Omega 0.3H`
    B
    `50 Omega sqrt((0.3)H)`
    C
    `100 Omega 0.3 H`
    D
    `100 Omega sqrt(0.3)H`