JEE PYQ: Alternating Current Question 1
Question 1 - 2021 (16 Mar Shift 1)
An RC circuit as shown in the figure is driven by a AC source generating a square wave. The output wave pattern monitored by CRO would look close to:
(a) Sharp spikes with exponential decay (charging/discharging pattern) (b) Triangular wave (c) Square wave with rounded edges (charging/discharging of capacitor through R) (d) Sinusoidal wave
Show Answer
Answer: (c)
Solution
For $t_1 - t_2$: Charging graph. For $t_2 - t_3$: Discharging graph. The output across the capacitor shows charging and discharging exponential curves, which looks like option (c).