An indictor with inductance L = 0.2 H and negligible resistance is connected to a battery, a switch S, and two resistors, R, 15 N and R2 = 10 N as seen in figure. The battery has emf 80 V and negligible intemal resistance. Sis closed at t = 0. What is the value oft for which i has one third of the final value that it can obtain after switch S has been closed for a long time? %3D %3D A) 13.51 ms B) 23.65 us C) 121.63 us D) 4.86 ms E) 7.29 ms
An indictor with inductance L = 0.2 H and negligible resistance is connected to a battery, a switch S, and two resistors, R, 15 N and R2 = 10 N as seen in figure. The battery has emf 80 V and negligible intemal resistance. Sis closed at t = 0. What is the value oft for which i has one third of the final value that it can obtain after switch S has been closed for a long time? %3D %3D A) 13.51 ms B) 23.65 us C) 121.63 us D) 4.86 ms E) 7.29 ms
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Transcribed Image Text:Ri iny
R2
An inductor with inductance L 0.2 H and negligible resistance is connected to
a battery, a switch S, and two resistors, R, :
figure. The battery has emf 80 V and negligible intemal resistance. Sis closed at
t = 0. What is the value oft for which iz has one third of the final value that it
can obtain after switch S has been closed for a long time?
= 15 N and R2 = 10 N as seen in
A) 13.51 ms B) 23.65 us C) 121.63 us D) 4.86 ms E) 7.29 ms
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