Ratio of charge stored in a capacitor to the potential difference between both sides of the capacitor

The size of the force that acts between two point charges is proportional to the product of their charges and inversely proportional to the square of their separation - the force is attractive for opposite charges and repulsive for like carges

An insulating material placed between capacitor plates that helps it to store more charge by preventing it from passing between the plates - it becomes polarised when the capacitor is charged

Small closed loops of current within a conductor or magnet - they act against the magnetic flux in a transformer, making it less efficient

A region of space in which charge particles experience an attractive or repulsive force

A way of representing an electric field, by showing the direction of a force on a positive charge (positive to negative)