P2 5 Cables and Current Flashcards
1
Q
What is direct current?
A
Direct Current is in one direction only
2
Q
What is alternating current?
A
Alternating current repeatedly reverses its direction
3
Q
Give an example of direct current
A
The battery in a torch
4
Q
Give an example of alternating current
A
Switching a light on at home
5
Q
What does a mains circuit have?
A
A mains circuit has: a live wire that is alternatively positive and negative at every cycle a neutral wire at 0 volts the neutral wire earthed at the local substation
6
Q
Plug Wiring
A