Question

The equivalent inductance between $A$ and $B$ is

• A. 1 H
• B. 4 H
• C. 0.8 H
• D. 16 H

Answer 1

Answer: (A)

The equivalent circuit diagram is as shown in the figure. Here, all the inductances are connected in parallel. Hence, the equivalent inductance between $A$ and $B$ is

$\frac{1}{L_{AB}}=\frac{1}{4}+\frac{1}{4}+\frac{1}{4}+\frac{1}{4}=\frac{4}{4}=1H$
or $L_{AB}=1H$