In the following figure, if L₁ = 2 mH, L₂ = 3 mH and L₃ = 7 mH, find the total inductance between terminals A and B:

Question

Question

This question was previously asked in

MPPGCL JE Electrical 28 April 2023 Shift 2 Official Paper

Answer 1

Concept

When 'n' inductors are connected in series, the equivalent inductance is given by:

\(L_{eq}=L_1+L_2.........L_n\)

When 'n' inductors are connected in parallel, the equivalent inductance is given by:

\({1\over L_{eq}}={1\over L_1}+{1\over L_2}.........{1\over L_n}\)

Calculation

Given, L1 = 2 mH, L2 = 3 mH and L3 = 7 mH

The given inductors are connected in series.

\(L_{eq}=2+3+7=12\space mH\)