Alternating Voltage and alternating have phase difference of 90u with each other in a circuit called:
Correct answer: A. Pure capacitive circuit
- A. Pure capacitive circuit
- B. Pure inductive circuit
- C. RLC series AC circuit at resonance
- D. Both (A) & (8) are true
Explanation
In a pure capacitive circuit, the alternating voltage and current have a phase difference of 90 degrees with each other. This means that the voltage and current waveforms reach their maximum and zero points at different times. In a capacitive circuit, the current leads the voltage by 90 degrees. This phase difference occurs because the capacitor in the circuit stores and releases charge, causing the current to flow ahead of the voltage. This behavior is unique to capacitors in AC circuits.
This question appeared on the KMU Centralized Admission Test 2021 paper, which you can sit online with every answer explained.
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About AC Through Resistor, Capacitor and Inductor
Alternating current through a resistor, capacitor and inductor involves phase relationships between voltage and current, reactance, impedance and energy transfer. A resistor keeps voltage and current in phase, while a capacitor and inductor produce opposite phase shifts, a distinction used in circuit diagrams and numerical calculations.
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