CUET · PHYSICS · PYQ PAPER 2023
A small signal voltage \(e=e_o\) sin wt is applied across an ideal capacitor of capacitance C. The correct statement is:
- A Phase difference between Current \(I(t)\) and Voltage \(V(t)\) is zero.
- B Capacitor does not consume any energy from the source of emf over a complete cycle.
- C Current \(I(t)\) lags behind the voltage \(V(t)\) by \(\frac{\pi}{2}\)
- D Current \(I(t)\) leads the voltage \(V(t)\) by \(\pi\)
Answer & Solution
Correct Answer
(B) Capacitor does not consume any energy from the source of emf over a complete cycle.
Step-by-step Solution
Detailed explanation
In an ideal capacitor, the current leads the voltage by \(\frac{\pi}{2}\), and the average power consumed over a complete cycle is zero because the energy stored during charging is returned to the source during discharging. Since option C is incorrect (it says lags) and option D…
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