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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

`vecB=(mu_(0))/(4pi)l/R(pihati-2hatk)`

B

`vecB=(mu_(0))/(4pi) l/R`

C

`vecB=-(mu_(0))/(4pi) l/R (pi hati-2hatk)`

D

`vecB=-(mu_(0))/(4pi) l/R(pihati+2hatk)`

Text Solution

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The correct Answer is:
D
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