A) 5 s
B) 1/5 s
C) 40 s
D) 20 s
Correct Answer: A
Solution :
Time constant of L-R circuit is, \[\tau =\frac{L}{R}\] Here, \[L=40\,H,\,R=8\,\Omega ,\,E=2V\] \[\therefore \]\[\tau =\frac{40}{8}=5\,s\]You need to login to perform this action.
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