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The wire loop shown in figure carries a ...

The wire loop shown in figure carries a current as shown. The magnetic field at the centre O is ,

A

zero

B

`(mu_(0) I)/(4) ((1)/(R_(1)) - (1)/(R_(2)))`

C

`(mu_(0)I)/(4) ((1)/(R_(2)) + (1)/(R_(1)))`

D

`(mu_(0) I)/(2) ((1)/(R_(1)) - (1)/(R_(2)))`

Text Solution

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The correct Answer is:
B
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