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An arc of a circle of radius R suntends ...

An arc of a circle of radius R suntends at an angle `pi//2` at the centre.It carries a current i. The magnetic field at the will be

A

`(mu_(0)i)/(2R)`

B

`(mu_(0)i)/(8R)`

C

`(mu_(0)i)/(4R)`

D

`(2mu_(0)i)/(5R)`

Text Solution

Verified by Experts

The correct Answer is:
B
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