In a circuit containing a capacitor and an AC source, the current is zero at the instant the source voltage is maximum. Is it consistent with Ohm’s law?

No.

Ohm’s law states that the current flowing through a circuit is directly proportional to the potential difference applied across its ends.


Therefore, V = IR, where V = voltage, I = current, R = resistance.


Now, Ohm’s law is valid only in purely resistive circuits (without inductors or capacitors), where there is a linear relationship between voltage and current.


However, Ohm’s law is not valid in case of circuits with non-linear elements, for example those containing inductors or capacitors or a combination of both.


Hence, in the given circuit, Ohm’s law is not consistent. (Ans).


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