The force that causes an electric current to flow through a circuit. It is measured in volts. The greater the voltage, the greater the flow of electrical current.

A measurement of electricity. This measurement describes how fast the electrons are moving, and how likely the electricity is to overcome resistance.

Electrical potential difference. The unit of measure is the Volt.

Electromotive pressure that forces current through an electrical conductor. The difference of potential between any two conductors of a circuit.