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A current - carrying wire is placed in t...

A current - carrying wire is placed in the grooves of an insulating semicircular - disc of radius R as shown. The current enters at point A and leaves from point B. Determine the magnetic field at point D.

A

`(mu_(0)l)/(8piRsqrt3)`

B

`(mu_(0)l)/(4piRsqrt3)`

C

`(sqrt3mu_(0)l)/(4piR)`

D

none of these

Text Solution

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The correct Answer is:
B
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