The capacity of a conductor depends upon the following factors
- Shape and size of the conductor
- Medium between them
- Presence of other conductors near it
What is a capacitor?
A capacitor is a device that is used to store charges in an electrical circuit. Energy stored in a capacitor is electrical potential energy, and it is thus related to the charge Q and voltage V on the capacitor. The working principle of the capacitor is that the capacitance of a conductor increases appreciably when an earthed conductor is brought near. Capacitors store energy by holding apart pairs of opposite charges. The simplest design for a capacitor is a parallel plate, which consists of two metal plates with a gap between them.