- 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 x 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.