1 Answer
A capacitor does not conduct DC (Direct Current) after it is fully charged. Initially, when a DC voltage is applied, the capacitor charges up, and once it's fully charged, it blocks any further DC current from flowing through it.
However, a capacitor conducts AC (Alternating Current). In an AC circuit, the voltage changes direction periodically. Because the capacitor is constantly charging and discharging as the voltage alternates, it allows the AC to pass through. The capacitor "reacts" to the changing voltage, effectively allowing AC to flow, though it doesn't allow direct current to pass once it's charged.
So, in summary:
However, a capacitor conducts AC (Alternating Current). In an AC circuit, the voltage changes direction periodically. Because the capacitor is constantly charging and discharging as the voltage alternates, it allows the AC to pass through. The capacitor "reacts" to the changing voltage, effectively allowing AC to flow, though it doesn't allow direct current to pass once it's charged.
So, in summary:
- DC: The capacitor charges and then blocks further current after it's fully charged.
- AC: The capacitor allows current to flow due to the periodic charging and discharging with the alternating voltage.