Question

How long will a capacitor take to discharge?

Answer 1

Capacitor:

1. A capacitor is an electrical energy storage device made up of two insulated conductors in close proximity. The parallel-plate capacitor is an easy example of such a storage device.
2. Each capacitor's discharge time is different. To get the capacitor's discharge time, we must first determine the following: Where $q$ is the capacitor's charge at a time$t,C$ is the time constant, and is the battery's emf, the formula for $q$ is $q=\epsilon C\left(1-eCR-t\right)$. Capacitor discharge occurs when a charged capacitor's plates are linked by a conducting wire.
3. The unit of capacitor's capacitance $\left(C\right)$ is Farad.
4. The resistance $\left(R\right)$ of the capacitor's draining resistance.
5. The discharge's time constant is given by$T=RC$.
6. After one time period, a fully charged capacitor will discharge to $63\%$ its original voltage.
7. As a result, we can safely assume that a capacitor discharges in $5-time$constants.