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Two plane circular coils P and Q have ra...

Two plane circular coils P and Q have radii `r_(1)` and `r_(2)`, respectively, `(r_(1) lt lt r_(2))` and are coaxial as shown in fig. The number of turns in P and Q are respectively `N_(1)` and `N_(2)`. If current in coil Q is varied steadily at a rate x ampere/second then the induced emf in the coil P will be approximatery -

A

`mu _(0) N_(1) N_(2) pi r_(1)^(2)`

B

`mu _(0) N_(1) N_(2)pi r_(1)^(2)x`

C

`mu _(0)N_(1)N_(2) pi r_(1)^(2)x//2r_(2)`

D

0

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The correct Answer is:
c
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MOTION-ELECTRO MAGNETIC INDUCTION-EXERCISE-1
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