3.a A solenoid has an inductance of 52.0 mH and a resistance of 0.44 (consider t

Question

3.a A solenoid has an inductance of 52.0 mH and a resistance of 0.44 (consider that this resistance is in series with the inductance). If the solenoid is connected to a 12.0 V battery, how long will it take for the magnetic field set up by the inductor to become stable. (Hint; this is another way of saying that t =, or equilibrium is established.) Give your answer in the form "a.bc s"
3.b For the solenoid in 3.a, how long after the battery is connected does it take for the current in the circut to get to 50% of its final value? the Give your answer in the form "a.bc x 10^(y) s".
3.a A solenoid has an inductance of 52.0 mH and a resistance of 0.44 (consider that this resistance is in series with the inductance). If the solenoid is connected to a 12.0 V battery, how long will it take for the magnetic field set up by the inductor to become stable. (Hint; this is another way of saying that t =, or equilibrium is established.) Give your answer in the form "a.bc s"
3.b For the solenoid in 3.a, how long after the battery is connected does it take for the current in the circut to get to 50% of its final value? the Give your answer in the form "a.bc x 10^(y) s".

3.b For the solenoid in 3.a, how long after the battery is connected does it take for the current in the circut to get to 50% of its final value? the Give your answer in the form "a.bc x 10^(y) s".

Explanation / Answer

current in RL circuit is given by

i=Io(1-e^(-tR/L)

so i will be almost equal to Io after 5 time constant

so t=5*L/R=0.59 sec

(b) current in RL charging circuit is

i=Io(1-e^(-tR/L)

0.5Io=Io(1-e^(-tR/L)

we get t=8.19*10^(-2) se

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