Chapter 5: Mains Electricity Flashcards
1
Q
What is the period of an AC current?
A
The time taken for one cycle
2
Q
How do you work out frequency?
A
1 divided by the period
3
Q
What is frequency measured in?
A
Hz
4
Q
Which side of a plug is the live wire on?
A
The Right
5
Q
Which side of a plug is the neutral wire on?
A
The Left
6
Q
How do you work out electrical power?
A
P = V (Pot .Diff) x I (Current)
OR
Power = Energy / Time
7
Q
What do you need to work out in order to choose a correct fuse?
A
Current (I) from I = P/V
8
Q
How to work out energy transferred to each component?
A
PD across component X Charge
