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The magentic field B at the centre O in ...

The magentic field B at the centre O in fig. shown is

A

`(mu_0I)/(4)[(1)/(R_1) - 1/(R_2)]`

B

`(mu_0I)/(4)[(1)/(R_1) + 1/(R_2)]`

C

`(mu_0I)/(4)(R_1 - R_2)`

D

`(mu_0I)/(4)(R_1 + R_2)`

Text Solution

Verified by Experts

The correct Answer is:
B
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