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An arc of a circle of raduis R subtends ...

An arc of a circle of raduis `R` subtends an angle `(pi)/2` at the centre. It carriers a current `i`. The magnetic field at the centre will be

A

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

B

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

C

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

D

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

Text Solution

Verified by Experts

The correct Answer is:
B
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