In an ac circuit, the instantaneous current is zero, when the instantaneous voltage is maximum. In this case, the source may be connected to :
A. pure inductor.
B. pure capacitor.
C. pure resistor.
D. combination of an inductor and capacitor.
Choose the correct answer from the options given below :
A. pure inductor.
B. pure capacitor.
C. pure resistor.
D. combination of an inductor and capacitor.
Choose the correct answer from the options given below :
- (A)A, B and C only
- (B)B, C and D only
- (C)A and B only
- (D)A, B and D only✓ Correct
Answer: (D)
Solution
Instantaneous current zero when instantaneous voltage is maximum means the current and voltage are out of phase, i.e. the circuit is purely reactive (no resistive dissipation, average power zero).
This happens for a pure inductor (A), a pure capacitor (B), and an inductor–capacitor combination (D). A pure resistor has current in phase with voltage (peaks together), so C is excluded.
Correct set: A, B and D option D.
This happens for a pure inductor (A), a pure capacitor (B), and an inductor–capacitor combination (D). A pure resistor has current in phase with voltage (peaks together), so C is excluded.
Correct set: A, B and D option D.
JEE Main · 2024 · 04 Apr 2024 · Shift 1 · Single correct option