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A uniform magnetic field is restricted w...

A uniform magnetic field is restricted within a region of radius r. The magnetic field changes with time at a rate `(dB)/(dt)`. Loop 1 of radius R `gt` r encloses the region r and loop 2 of radius R is outside the region of magnetic field as shown in figure. Then, the emf generated is

Zero in loop 1 and zero in loop 2
− d B d t π r 2 in loop 1 and − d B d t π 2 in loop 2
− d B d t π R 2 in loop 1 and zero in loop 2
− d B d t π r 2 in loop 1 and zero in loop 2

A

Zero in loop 1 and Zero in loop 2

B

`-(dB)/(dt)pir^(2)` in loop 1 and `-(db)/(dt) pir^(2)`

C

`-(db)/(dt) piR^(2)` in loop 1 zero in loop 2

D

`-(db)/(dt) pir^(2)` in loop 1 and zero in loop 2

Text Solution

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The correct Answer is:
c
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