Q 12-07-006NEETNEET 2023Top questionEasy
An ac source is connected to a capacitor C. Due to decrease in its operating frequency :
Answer: (C) displacement current decreases.
Concept. $X_C = \dfrac{1}{2\pi fC}$; the displacement current between the plates equals the conduction current $\dfrac{V}{X_C}$.
Step 1. Lower frequency. $X_C$ increases.
Step 2. Current. $I = \dfrac{V}{X_C}$ decreases, so the displacement current decreases.
Answer. Displacement current decreases (Option C).
Solution by Sreeraj P, M.Sc Physics