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AC Applied to a Resistor

An AC source ...

Question

An AC source is connected to a purely resistive circuit. What is true of the following

A

current leads ahead of voltage in Phase

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B

current lags behind voltage in phase

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C

current and voltage are in same Phase

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D

any of the above may be true depending upon the value of resistance.

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Solution

The correct option is C current and voltage are in same Phase
C

In a pure ohmic AC resistance, the current and voltage are in phase as there is no phase difference between them, The current flowing through the resistance is directly proportional to the voltage across it with this linear relationship in an AC circuit being called impedance.

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