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A conducting circular loop is placed in ...

A conducting circular loop is placed in a uniform magnetic field, B=0.025T with its plane perpendicular to the loop. The radius of the loop is made to shrink at a constant rate of `1 mms^(-1)`. The induced emf when the radius is 2 cm is

A

`pimuV`

B

`2pimuV`

C

`pi//2muV`

D

`2muV`

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MODERN PUBLICATION-TEXTUAL QUESTIONS-EXERCISE
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  5. If a wire is stretched to make it 0.1% longer, its resistance of will

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