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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

`B=(mu_(0))/(4pi)(I)/(R)(pihati+2hatk)`

B

`B=-(mu_(0))/(4pi)(I)/(R)(pihati-2hatk)`

C

`B=-(mu_(0))/(4pi)(I)/(R)(pihati+2hatk)`

D

`B=(mu_(0))/(4pi)(I)/(R)(pihati-2hatk)`

Text Solution

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The correct Answer is:
a
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