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A wire carrying current I has the shape...

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

A

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

B

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

C

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

D

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

Text Solution

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The correct Answer is:
A
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