JEE PYQ: Alternating Current Question 37
Question 37 - 2019 (11 Jan Shift 1)
The switch $S_1$ is closed at time $t = 0$ and the switch $S_2$ is kept open. At some later time ($t_0$), the switch $S_1$ is opened and $S_2$ is closed. The behaviour of the current $I$ as a function of time ‘$t$’ is given by:
(a) Current rises sharply then decays exponentially after $t_0$ (b) Current rises exponentially to saturation, then decays exponentially after $t_0$ (c) Current rises sharply at $t_0$ then falls to zero (d) Current rises exponentially then falls with sharp peak at $t_0$
Show Answer
Answer: (b)
Solution
The current grows exponentially from $t = 0$ to $t = t_0$, then decays exponentially after $t_0$.
BETA
