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Current I flows through a long conductin...

Current I flows through a long conducting wire bent at right angle as shown in Fig. Find the magnetic field at point P on the right angle bisector of the angle XOY at distance r form O.

A

`mu_(0)I/pi r`

B

`2mu_(0)I/pi r`

C

`2mu_(0)I/pi r (sqrt(2)+1)`

D

`2mu_(0)I/2pi r (sqrt(2)+1)`

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