Centripetal force is a force that acts on a body moving in a circular path and is directed towards the centre around which the body is moving.

An electric field is a region of space where a charge experiences a force.

The electric field strength $E$ is defined as the force per unit charge experienced by a small positive test charge $q$.

Electric potential is the amount of work done per unit charge in bringing a small positive test charge from infinity to a point in an electric field.

Electric potential energy is the energy stored in a system of charged particles due to their positions relative to each other.

The strength of a magnetic field, measured in tesla (T). It fixes the size of the force a field exerts on a moving charge or a current-carrying wire.