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Question
A pair of the adjacent coil has a mutual inductance of 1.5 H. If the current in one coil varies from 0 to 20 A in 0.5 s, what is the change of flux linked with the other coil.
Solution
Given: M = 1.5 H, I1 = 0 A, I2 = 20 A
dI = I2 - I1
= 20 - 0 = 20 A
dt = 0.5 sec
Change of flux linked with the other coil,
dΦ = MdI
= 1.5 × 20
= 30 Wb
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