The unit of potential difference, equal to energy transfer per unit charge in joules per coulomb
Measure of current
Unit of power
Conservation of energy
Energy cannot be created or destroyed.
Diagram to show the energy transfer through a device.
Kilo- watt hour
Electrical energy supplied to a 1KW electrical device in 1 hour
The network of cables and transformers used to transfer electricity from power stations to consumers.
used to step voltage up e.g. from a power station to the grid voltage.
This is defined as:
useful energy transferred by a device
Total energy supplied to the device
Step- Down transformers
used to step the voltage down e.g. from the grid voltage to the min voltage used in homes and office.
Movement of charge particles through a circuit.
Electrical device used to charge an (alternating) voltage.