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X and Y, two metallic coils are arranged...

X and Y, two metallic coils are arranged in such a way that, when steady change in current flowing in X coil is 4 A, change in magnetic tic fluxcoils sociateddwith coil Y is 0.4 Wb. Mutual inductance of the system of these coils is …….. H

A

`0.8`

B

`0.1`

C

`0.2`

D

`5`

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