P5 Flashcards
1
Q
Power equation using energy
A
Energy
———— = power.
Time
2
Q
Power equation using voltage
A
Power = Current X Voltage
P = I X V
3
Q
Power equation using only current
A
Power = current ^2
P = I^2
4
Q
Power equation using resistance
A
Power = current X resistance
P = I X R
5
Q
How many wires are there in a plug?
What do each of the colours represent?
A
Blue - neutral wire
Green + yellow- earth wire
Brown- live wire
6
Q
What is mains voltage?
A
230 volts
7
Q
What is the purpose of a fuse and how does it work?
A
Thin piece of metal that will break if the current gets to strong because the metal has a high resistance and will melt
