A magnetic circuit of reluctance 3000 A-turns/Wb is wounded by a wire of 400 turns. Determine the average emf induced (in V) in the coil, if a current of 2 A is flowing in the coil is reversed in 15 s.

A magnetic circuit of reluctance 3000 A-turns/Wb is wounded by a wire

1.	A magnetic circuit of reluctance 3000 A-turns/Wb is wounded by a wire of 400 turns. Determine the average emf induced (in V) in the coil, if a current of 2 A is flowing in the coil is reversed in 15 s.
A.	14.24
B.	16.28
C.	17.96
D.	19.62
Answer» B. 16.28

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A magnetic circuit of reluctance 3000 A-turns/Wb is wounded by a wire of 400 turns. Determine the average emf induced (in V) in the coil, if a current of 2 A is flowing in the coil is reversed in 15 s.

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