JEE · NEET Previous Year Question
A small signal voltage is applied across an ideal capacitor C
Topic: NEET PYQ
Answer: D. Full step-by-step solution below.
- ACurrent is in phase with voltage .
- BCurrent It leads voltage Vt by
- CCurrent It , lags voltage Vt by
- DOver a full cycle the capacitor does not consume any energy from the voltage source.
Correct answer: D
Solution
(d) When an ideal capacitor is connected with an ac voltage source, current leads voltage by 90. Since, energy stored in capacitor during charging is spent in maintaining charge on the capacitor during discharging. Hence over a full cycle the capacitor does not consume any energy from the voltage source.More Electromagnetic Induction PYQs
- A conducting circular loop is placed in a uniform magnetic field of 0.4 T with its plane perpendicular to the field. Somehow, the…
- A 20 cm long metallic rod is rotated with 210 rpm about an axis normal to the rod passing through its one end. The other end of th…
- A generator with a circular coil of 100 turns of area 2 is immersed in a magneti…
- If is the number of turns in a circular coil then the value of self inductance varies as
- A rectangular coil of 20 turns and area of cross‐section . cm has a resistance of . If a magnetic field…