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Showing results for tags 'how capacitor block dc current'.
why ac current passes through capacitor but dc can’t how capacitor block dc current Explanation 1 We try to understand using a discharged battery in the circuit. When switch on, the battery is starting to charge and increasing the voltage level of the battery and there is a flow of current. When the battery gets fully charged and the voltage of a battery increase and is equal to supply voltage then there is no flow any current between them. Let us consider a simple circuit as given below. In this circuit, a capacitor is connected with a resistor in series. A 12v DC