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A wire carrying current I has the shape ...

A wire carrying current I has the shape as shown in adjoining figure. Linear parts of the wire are very long and parallel to X-axis while semicircular portion of radius R is lying in yz-plane. Magnetic field at point O is

A

`(mu_(0)I)/(4piR)(pii+2k)`

B

`-(mu_(0)I)/(2piR)(pi i+2k)`

C

`-(mu_(0)I)/(4piR)(pi+2k)`

D

`(mu_(0)I)/(4piR)(pi-2k)`

Text Solution

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The correct Answer is:
C
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