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A conducting wire is bent into a loop as...

A conducting wire is bent into a loop as shown in the figure. The segment AOB is parabolic given by the equation `y^(2) =2x` while segment BA is a straight line parallel to the y-axis. The magnetic field in the region is `vec(B) - 8 hat(k)` and the current in the wire is 2A.

The field created by the current in the loop at point C will be

A

`-(mu_(0))/(2pi) hat(k)`

B

`-(mu_(0))/(2pi)hat(k)`

C

`-(mu_(0) sqrt(2))/(pi) hat(k)`

D

None of these

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