Correct option is A
A capacitor opposes a sudden change in voltage in a circuit. This is because capacitors resist changes in voltage drop by drawing or supplying current to the voltage change source.
Capacitor charging and discharging:
Capacitors are useful in electronic timing circuits because they can regulate and anticipate how quickly they charge and discharge.
Size of capacitor:
The size of a capacitor determines how long it takes to charge or discharge. A larger capacitor takes longer to charge or discharge than a smaller one.
Capacitor storage:
A capacitor stores electrical energy by accumulating electric charges on two closely spaced surfaces that are insulated from each other.