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An inductor of inductance 10 mH and a re...

An inductor of inductance 10 mH and a resistance of 5 is connected to a battery of 20 V at t = 0. Find the ratio of current in circuit at t =  to current at t = 40 sec

A

`1.06`

B

`1.15`

C

`1.48`

D

`0.84`

Text Solution

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The correct Answer is:
A

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Knowledge Check

  • A coil of inductance 5.0 mH and negligible resistance is connected to an alternating voltage V=10 sin (100t) . The peak current in the circuit will be:

    A
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    B
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    D
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  • An inductor of 20 H and a resistance of 10 Omega , are connected to battery of 5 volt in series, then initial rate of change of current is :-

    A
    `0.5 amp//s`
    B
    `2.0 amp//s`
    C
    `2.5 amp//s`
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  • A coil of inductance 8.4 mH and resistance 6 Omega is connected to a 12 V battery. The current in the coil is 1.0 A at approximately the time.

    A
    `500`sec
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