Q. 9

A pair of adjacent coils has a mutual inductance of 1.5 H. If the current in one coil changes from 0 to 20 A in 0.5 s, what is the change of flux linkage with the other coil?

Answer :

Given: Mutual conductance, μ = 1.5 H

Initial current I1= 0


Final current I2 = 20 A


Time taken t = 0.5 seconds


Change in the current can be calculated as:


dI = I1 - I2 = 20 – 0.0


dI = 20 A


The mutual conductance of the circuit is calculated using the formula:



or


As we know that


Substituting it in equation, we get





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