What is an amp vesus a watt?
Amp is short for Ampere, the unit for current flow. Watts is a
unit of energy expended. One horsepower is 735 watts. If you were
to compare electricity with water Amps would be buckets per second
and watts would describe the force of the water.
The ampere (A) is the base unit for electric
current in SI. The watt (W) is the derived unit for
power in SI.
The ampere is defined in terms of the force between two,
parallel, current-carrying conductors.
The watt is defined as the rate of doing work and,
therefore, is a special name given to a joule per second.