Question
Download Solution PDFIn a single-phase RL series circuit, if the current lags the supply voltage by an angle of 60°, then the voltage across the inductor leads the supply voltage by an angle of __________.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct option is 4
Concept:
- In an RL series circuit with a sinusoidal supply, the current lags the voltage across the resistor, is in phase with the total supply voltage, and leads the voltage across the inductor.
- If the current is lagging the supply voltage by 60°, this means that the phase difference between the current and the voltage across the inductor would be 90° (because in an RL circuit, the voltage across the inductor is always 90° ahead of the current).
- Therefore, if we subtract the 60° lag of the current from the 90° lead of the inductor voltage, the voltage across the inductor is leading the supply voltage by a phase angle of 300.
Last updated on Jun 16, 2025
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