When an alternating sinusoidal voltage is applied to the plates of an ac capacitor the capacitor is charged firstly in one direction and then in the opposite direction changing polarity at the same rate as the ac supply voltage. What role do inductors capacitors and resistors play in ac circuits. Ac Circuits Alternating Current Electricity Pplato Flap Phys 5 4 Ac Circuits And Electrical Fm Tansmitter Ac Equivalent Circuit Capacitor Analysis Recall also that in an ac circuit a resistors voltage and current are in phase with each other as shown here. Role of capacitor in ac circuit . Instead of having a resistance a capacitor in an ac circuit has something called a capacitive reactance which is similar to a resistance. Alternating current swaps back and forth between the direction the electrons flow. Due to the high cost and proper maintenance of capacitor sta...
