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Question

Question: The figure shows three circuits with identical batteries, inductors and resistances. Rank the circui...

The figure shows three circuits with identical batteries, inductors and resistances. Rank the circuits according to the currents through the battery just after the switch is closed, greatest first –

A

i2> i3> i1

B

i2> i1> i3

C

i1> i2> i3

D

i1> i3> i2

Answer

i2> i3> i1

Explanation

Solution

Just after switch on L behaves open ckt

⇒ I1 = E\frac{E}{\infty}= 0, I2 = ER\frac{E}{R},I3 = E2R\frac{E}{2R}

⇒ I2 > I3 > I1