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Three inductors having inductance values 3H, 4H and 5H are connected in series, calculate the equivalent inductance.

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Three inductors having inductance values 3H, 4H and 5H are connected in series, calculate the equivalent inductance.

(a) 10H

(b) 12H

(c) 3H

(d) 5H

I had been asked this question in exam.

My question is taken from Coils Connected in Series topic in section Inductance in a DC Circuit of Basic Electrical Engineering

1 Answer

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Best answer
The correct choice is (b) 12H

The best explanation: When inductances are connected in series, the equivalent inductance is equal to the sum of all the individual inductance values.

Hence Leq= L1+L2+L3= 12H.

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