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Alternating Current Applied to an Inductor

When an AC so...

Question

When an AC source is connected across a resistor ________.

A

the current lags behind the voltage in phase

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B

the current and the voltage are in same phase

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C

the current leads the voltage in phase

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D

None of the above

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Solution

The correct option is B the current and the voltage are in same phase
In resistor, both current and voltage are in phase. Whereas in inductor, current lags the voltage by $90^{o}$ and in capacitor current leads by $90^{o}$ .

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