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Question
An ac circuit as shown in the figure has an inductor of inductance L and a resistor or resistance R connected in series. Using the phasor diagram, explain why the voltage in the circuit will lead the current in phase.
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Solution
In inductor voltage leads current by π / 2 and in resistor both voltage and current are in same phase, the resultant of eL & eR will lead by phase Φ .
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