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In the figure shown there are two semici...

In the figure shown there are two semicircles of radii `r_(1)` and `r_(2)` in which a current `i` is flowing. The magnetic induction at the centre `O` will be

A

`(mu_(0)i)/(4)(r_(1)+r_(2))`

B

`(mu_(0)i)/(4)(r_(1)-r_(2))`

C

`(mu_(0)i)/(4)[(r_(1)+r_(2))/(r_(1)r_(2))]`

D

`(mu_(0)i)/(4)[(r_(1)-r_(2))/(r_(1)r_(2))]`

Text Solution

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The correct Answer is:
C
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