Why does capacitor work on battery

In summary, a capacitor works on a battery by storing and releasing electric charge. It is necessary in a battery circuit to stabilize voltage, reduce noise and interference, and provide temporary energy. A capacitor can work on any type of battery, but the specific application may determine the type needed. The length of time a capacitor can work on a battery depends on its capacitance, voltage, and stored charge. It is not necessary for all battery-powered devices as its need depends on the device's requirements and the type of battery used.
  • #1
tina_singh
14
0
a capacitor does not work on dc as time varying current is required for it to function then why does it work on dc battery?
 
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  • #2
It takes some time for the capacitor to get fully charged. During this time there is current flowing in the capacitor electrons are flowing into its negative plate and accumulate negative charge there, while electrons leave from its positive plate and accumulate positive charge there. After the end of this time capacitor is fully charged and acts as a switch and there is no more current flowing in the circuit.
 

1. How does a capacitor work on a battery?

A capacitor works on a battery by storing and releasing electric charge. When connected to a battery, the capacitor charges up and stores energy in the form of an electric field between its two plates. When the battery is disconnected, the capacitor releases this stored energy, which can be used to power a circuit or device.

2. Why is a capacitor necessary in a battery circuit?

A capacitor serves several purposes in a battery circuit. It can help stabilize the voltage, reduce noise and interference, and provide a temporary source of energy for when the battery cannot supply enough power on its own. It also helps to smooth out any fluctuations in the battery's output, ensuring a more consistent flow of electricity.

3. Can a capacitor work on any type of battery?

Yes, a capacitor can work on any type of battery, as long as it is connected properly and has the appropriate capacitance and voltage ratings. However, the specific application and requirements of the circuit or device may determine the type of capacitor that is most suitable for use with a particular type of battery.

4. How long can a capacitor work on a battery?

The amount of time a capacitor can work on a battery depends on its capacitance, the voltage of the battery, and the amount of charge it is storing. Generally, capacitors can hold a charge for a few seconds to several days, depending on these factors. However, in practical applications, capacitors are often used as part of a larger circuit and their charge may be constantly replenished by the battery.

5. Is a capacitor necessary for all battery-powered devices?

No, a capacitor is not necessary for all battery-powered devices. Some devices may not require the use of a capacitor, while others may have capacitors built into their circuit design. The need for a capacitor depends on the specific requirements and functions of the device, as well as the type of battery being used.

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