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RC Circuits - Technical MCQs

Q1:

In a series RC circuit, the phase difference between the current and the source voltage _____.

A depends on the values of R and C

B equals 0°

C equals 90°

D depends on the amplitude of the input voltage

ANS:A - depends on the values of R and C

But generally, the current and voltage are in phase with each other. So the answer should be 0.