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Ampere is a measurement of electrical energy power flow

Ohms is the measurement of resistance to flow of energy

The unit of measurement for electrical energy used in the home is the kilowatt hour, and this is the unit which the electricity supply company uses to work out your bill.

The official unit for any type of energy (not just mechanical energy) is the joule. The official unit for any power (not just electrical power) is the watt, equal to joules / second.

A Watt is a pure measurement of energy. The amount of electrical energy (watts) is determined by the formula "Amps X Volts = Watts".

Electrical energy (watts) can be converted directly into heat or into horsepower or some other intermediate form.