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If in a coil rate of change of area is (...

If in a coil rate of change of area is `(5meter^(2))/(milli second)`and current become `1 amp` from `2 amp` in `2xx10^(-3)` sec. if magnetic field is `1` Tesla then self-inductance of the coil is

A

`2H`

B

`5H`

C

`20H`

D

`10H`

Text Solution

Verified by Experts

The correct Answer is:
D
`e=B.(dA)/(dt)=L(di)/(dt)implies1xx(5)/(10^(-3)=Lxx((2-1))/(2xx10^(-3))impliesL=10H`
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A2Z-ELECTROMAGNETIC INDUCTION-Section D - Chapter End Test
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  2. Two circular coils A and B are facing each other as shown in figure. T...

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  4. Two coils P and Q are placed co-axially and carry current I and I' re...

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  8. In a transformer, number of turns in the primary coil are 140 and that...

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  10. When the current changes from +2A to -2A in 0.05 second, an e.m.f. of ...

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