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In case of pure capacitor, the voltage?(a) leads the voltage by 90⁰(b) lags behind the voltage by 45⁰(c) lags behind the voltage by 90⁰(d) is in phase with the voltageI have been asked this question in an interview for internship.My enquiry is from Phase Relation in a Pure Resistor topic in section Introduction to Alternating Currents and Voltages of Network Theory

Answer»

The correct choice is (c) lags behind the VOLTAGE by 90⁰

Best EXPLANATION: In a capacitor, there exists a phase DIFFERENCE between current and voltage. In CASE of pure capacitor, the voltage lags behind the voltage by 90⁰.



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