Magnetic field due to currentHard

Question

The conductor ABCDEF carries a current of 4 A. Find the net magnetic field at the center O :-
         

Options

A.π × 10-3T
B.π × 10-5T
C.π × 10-4T
D.π × 10-6T

Solution

B = B1 + B2
× 10-5T

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