- The amount of work electricity can do is described in terms of
*amperage* and *voltage*.
*Amperage (A)* describes the quantity of charge carriers flowing in an electric current.
*Current* is a colloquial term that means amperage.
*Amp hours (Ah)* describe the quantity of available charge or charge used.
*Voltage (V)* describes the quantity of electromagnetic force in which charge carriers are being pushed in an electric current.
- Voltage is always a relative measurement between two points.
*Wattage (W)* is a convenience unit to describe electricity that includes amps and voltage, multiplied together (watts = amps * volts).
- Volts and amps can be traded for each other in a current, as long as the overall amount of work (Wattage), stays the same. This is often done through induction.
*Power* is a colloquial term that usually means wattage.
- Circuits are closed loops that consists of a voltage
*source*, a *load*, and a return path called *ground* or *common*.