A) RL sec
B) \[\frac{R}{L}sec\]
C) \[\frac{L}{R}sec\]
D) \[\frac{1}{LR}sec\]
Correct Answer: C
Solution :
When battery disconnected current through the circuit start decreasing exponentially according to \[i={{i}_{0}}{{e}^{-Rt/L}}\] Þ \[0.37{{i}_{0}}={{i}_{0}}{{e}^{-Rt/L}}\] Þ \[0.37=\frac{1}{e}={{e}^{-Rt/L}}\] Þ \[t=\frac{L}{R}\]
You need to login to perform this action.
You will be redirected in
3 sec
