Q.

5 cm long solenoid having 10 ohm resistance and 5 mH inductance is joined to a 10 volt battery. At steady state the current through the solenoid in ampere will be

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a

5

b

1

c

2

d

Zero

answer is B.

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Detailed Solution

In steady state current passing through solenoid (At steady state inductor behave like short circuit.)i=ER=1010=1 A
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5 cm long solenoid having 10 ohm resistance and 5 mH inductance is joined to a 10 volt battery. At steady state the current through the solenoid in ampere will be