The correct answer is: A. varying voltage produces the charging and discharging currents.
A capacitor is a device that stores electrical energy in an electric field. When an alternating voltage is applied to a capacitor, the voltage across the capacitor changes with time. This causes the current through the capacitor to also change with time. The current through a capacitor is proportional to the rate of change of the voltage across it. So, when an alternating voltage is applied to a capacitor, the current through the capacitor will be alternating current.
Option B is incorrect because the peak value of the voltage does not affect the current through the capacitor. The current through a capacitor is proportional to
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