In the figure, the current l enters the circular loop of uniform wire of radius r at A and leaves it at B. The magnetic field of

In the figure, the current l enters the circular loop of uniform wire of radius r at A and leaves it at B. The magnetic field of the centre of circular loop is

A. Zero
B. `(mu_(0)l)/(2r)`
C. `(mu_(0)l)/(4r)`
D. `(3mu_(0)l)/(4r)`

In the figure, the current l enters the circular loop of uniform wire of radius r at A and leaves it at B. The magnetic field of the centre of circula

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