First slide

Inductance

Question

The inductance between A and D is :

Easy

A

3.66 H
B

9 H
C

0.66 H
D

1 H

Solution

Given circuit can be reduced to
$\frac{1}{L_{eff}} = \frac{1}{L_{1}} + \frac{1}{L_{2}} + \frac{1}{L_{3}} \Rightarrow \frac{1}{L_{eff}} = \frac{1}{3} + \frac{1}{3} + \frac{1}{3} = 1 \Rightarrow L_{eff} = 1 H$

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