What happens when a capacitor is connected to a dc supply?

Answer 1

is it ? are you sure ? but i know so many circuit where capacitor is connected with ac supply .

still , if u connected a capacitor to dc supply , then :

1. if it is in SERIES with the dc supply , it will block all the dc current as capacitor

provides infinite resistance to dc current .

application : where u want to block dc current.(simple high pass filter)

2. if it is in PARALLEL with the dc supply , it will not block dc current , but if any ac

current comes out from the supply , the ac current will go through the

capacitor , as capacitor provides small resistance to ac current.

application : a) where u want to block ac current.(simple low pass filter)

b) to filter the noise (ac components) of dc supply.

Answer 2

Dc current cannot pass through a Capacitor as it get charged only if alternating pulses(sine wave) are applied as the input.As a result,the capacitor cannot get charged.

<<>> The capacitor charges up to the level of the supply voltage. A capacitor is normally connected across the supply in a piece of equipment fed from a dc source. It is called a decoupling capacitor and it isolates the equipment from outside effects coming in on the supply wires.

Answer 3

In a DC (direct current) circuit, an inductor (sometimes called a "coil") acts as a straight piece of wire, while a capacitor is a break in the wire. These components are only useful in alternating current circuits.

Answer 4

in general ,capacitors act as a open circuit for dc voltage supply...

Answer 5

It usally stores the energy