Electricity Flashcards
What is the mains voltage number?
230W
What is current?
The flow of electrons, measured in Amps (A)
What is Potential Difference?
The energy transferred to an appliance, measured in Volts (V)
What is frequency?
The number of waves produced per second, measured in Hertz (Hz)
What is Direct Current?
An electrical current that always flows in only one direction. It is produced by cells and batteries.
What is an Alternating Current?
An electric current that is constantly changing direction.
What colour(s) is an Earth wire?
Yellow and Green
What colour(s) is a Live wire?
Brown
What colour(s) is a Neutral wire?
Blue
What is Power measured in?
Watts (W)
What is Potential difference measured in?
Volts (V)
What is Current measured in?
Amps (A)
What is the equation to find Power?
Power = potential difference x current
What is the equation to find Potential difference?
Power divided by Current
What is the equation to find Current?
Potential difference divided by Power
