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The current in a coil changes from 4 amp...

The current in a coil changes from `4` ampere to zero in `0.1s`. If the average e.m.f. induced is `100 volt`, what is the self-inductance of the coil?

A

`2.5 H`

B

`25H`

C

`400 H`

D

`40H`

Text Solution

Verified by Experts

The correct Answer is:
A
`e=L(di)/(dt)implies100=Lxx(4)/(0.1)impliesL=2.5H`
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Knowledge Check

  • The current in a coil decreases from 5 A to 0 in 0.1 sec. If the average e.m.f induced in the coil is 50 V, then the self inductance of the coil is

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    B
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  • A varying current ina coils chagre from 10 A to zero in 0.5 s .If the average emf induced in the coils is 220 V , the self- inductance of the coils is

    A
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    B
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    C
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    D
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  • A varying current in a coil change from 10A to 0A in 0.5 sec . If the average emf induced in the coil is 220V , the self inductance of the coil is

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