Behaviour Of Capacitor In Ac Circuit. As the supply voltage increases and decreases the capacitor charges and discharges with respect to this change. The capacitive reactance decreases with increasing frequency which results more current to flow through the circuit.
Resistors In Ac Circuits Impedance Of A Resistor from www.electronics-tutorials.ws
In other words accumulation of change in the capacitor starts instantly. That has very different characteristics when found in an ac circuit as opposed to a dc circuit. 1 the circuit symbol for the capacitor see figures 14 1a and 14 1b evokes a feeling for what a capacitor really is.
You know that the voltage across an inductor leads the current because the lenz law behavior resists the buildup of the current and it takes a finite time for an imposed voltage to force the buildup of current to its maximum.
However no current actually flows through the capacitor. The capacitor is connected directly across the ac supply voltage. In other words accumulation of change in the capacitor starts instantly. As the supply voltage increases and decreases the capacitor charges and discharges with respect to this change.
