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Figure shows a circular region of radius...

Figure shows a circular region of radius R in which uniform magnetic field B exists. The magnetic field is increasing at a rate `(dB)/(dt)`. The induced electric field at a distance r from the centre for `r lt R` is

A

`(dB)/(dt) ( r)/(2)`

B

Zero

C

`(d B)/(dt)`

D

`(dB )/(dt) (R^2)/(2r)`

Text Solution

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The correct Answer is:
A
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