Question

A circuit element is connected across an ac source. It is observed that the
voltage across the element leads the current flowing through it by a
phase angle pi/2 Identify the circuit element.

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Answer 1

Answer:

When a circuit element X is conneted across a.c. source, a current

flows through it and this current is in phase with applied voltage. When another element Y is connected across same a.c. source, the same current flows in the circuit, but it leads the voltages by

. Name the circuit elements X and Y. Find current that flows in the circuit when series combination of X and Y is connected acorss same a.c. voltage. Plot a graph showing variation of net impedance of series combination of X and Y as a function of angular frequency of applied voltage.

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