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In the diagram I(1),I(2) are the strengt...

In the diagram `I_(1),I_(2)` are the strength of the currents in the loop and straight conductors respectively `OA=AB=R.` the net magnetic field at the centre O is zero . Then the ratio of the currents in the loop and the straight conductor is

A

`pi`

B

`2pi`

C

`1/(pi)`

D

`1/(2 pi)`

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The correct Answer is:
D
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