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The total magnetic induction at point O ...

The total magnetic induction at point O due to curve portion and straight portion in the following figure, will be-

A

`(mu_(0)i)/(2pir) [pi - phi + tan phi]`

B

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

C

`0`

D

`(mu_(0)i)/(2pir)[pi - phi + tan phi]`

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The correct Answer is:
A
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