Capacitors and capacitance

Key terms and knowledge for AQA alevel capacitance topic.

What is the capacitance?

How much charge will be stored on the capacitor per unit voltage applied across its terminals.

Symbol for capacitance. Unit and unit symbol for capactiance.

C, Farad (F)

How to find the energy stored in a capacitor from a graph.

Area under a V-Q graph (equal to work done??)

What is a dielectric constant?

= permittivity of medium/permittivity of free space

Why does the addition of polar molecules change the capacitance of a capacitor?