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Q.

A pair of adjacent coils has a mutual inductance of 2H. If the current in one coil changes from 0 to 25 A in a time 1s, the change of flux linkage with the other coil is 

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a

100 Wb

b

12.5 Wb

c

25 Wb

d

50 Wb

answer is D.

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Detailed Solution

dϕ=M dI

dϕ=2×25=50 Wb

 

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