Combination of Inductors

Practice Questions:

Question 1: moderate

Two inductances connected in parallel are equivalent to a single inductance of 1.5 H, and
when connected in series are equivalent to a single inductance of 8H. The difference in their
inductance is :

1. 5 H

2. 7.5 H

3. 2 H

4. 4 H

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Question 2: moderate

Pure inductors each of inductance 3 H are connected as shown. The equivalent induction of
the circuit is :

1. 1 H

2. 2 H

3. 3 H

4. 9 H

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