(i) Define mutual inductance.
(ii) 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?

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Solution

(i) : Mutual inductance $(M)$ is the property of the coils that a current is induced in the secondary coil if there is a change in current in the primary coil.
Its SI unit is Henry.
(ii) :
Given : $M = 1.5 H$
Change of current $Δ I = 20 - 0 = 20 A$
Change of flux $Δ ϕ = M Δ I = 1.5 \times 20 = 30 W b$

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(i) Define mutual inductance.(ii) 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?

(i) : Mutual inductance (M) is the property of the coils that a current is induced in the secondary coil if there is a change in current in the primary coil.Its SI unit is Henry.(ii) :Given : M=1.5H Change of current ΔI=20−0=20 AChange of flux Δϕ=MΔI=1.5×20=30 Wb

(i) Define mutual inductance.
(ii) 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?