Two coil A and B have coefficient of mut...

Two coil A and B have coefficient of mutual inductance M=2H. The magnetic flux passing through coil A charges by 4 Weber in 10 seconds due to the change in current in B. Then

change in current in B in this time interval is 0.5A

the change in current in B in this time interval is 2A

the change in current in B in this time interval is 8A

a change in current of 1A in coil A will produces change in the flux passing through B by 4Wb

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