A) 4s
B) 3s
C) 2s
D) Is
Correct Answer: C
Solution :
[c] \[L=2mH\], \[i={{t}^{2}}{{e}^{-t}}\] \[E=-L\frac{di}{dt}=-L[-{{t}^{2}}{{e}^{-t}}+2t{{e}^{-t}}]\] when \[E=0,\,\,-{{e}^{-t}}{{t}^{2}}+2t{{e}^{-t}}=0\] or, \[2t\,{{e}^{-t}}={{e}^{-t}}\,{{t}^{2}}\Rightarrow t=2\,\sec \].You need to login to perform this action.
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