The ratio of output energy to input energy.
The path followed by electricity, beginning from the generating source, continuing through the devices that use the electricity, and then traveling back to the source.
The flow of electrons measured in amps.
A large distribution network that delivers electricity over a wide area.
The controlled flow of electrons through a conductor.
A conductor used to lead current into or out of a nonmetallic part of a circuit.
Usable power. Measured in kWh.
A process that determines how much energy you use in your house or apartment.
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