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Inductors

Q1: An inductor is in series with a voltage source, an open switch, and a resistor. The instant the switch is closed, the inductor acts like

A a short

B an open

C a resistor

D a voltage source

ANS:B - an open

Because, Inductor opposes instant Change in current, but after the time constant 5(rise, decay) Ccurrent will flow normally.

At the beginning, circuit will be like open circuit.



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