P2 — Electricity Flashcards
1
Q
What is the current
A
The flow of electrical charge
2
Q
What does total charge depend on
A
Current and time
3
Q
Name 7 of the 14 circuit diagram symbols
A
4
Q
What is LRD short for
A
Light dependent resistor
5
Q
What does the resistance of a thermistor depend on on
A
Temperature
6
Q
What can you use LRD’s and thermistors in
A
Sensing circuits
7
Q
What happens to potential difference
A
It’s shared
8
Q
What is mains supply
A
AC
9
Q
What is battery supply
A
DC
10
Q
how many wires does a cable have
A
3
11
Q
What are the 3 wires called
A
Live, Neutral and Earth
12
Q
Where is energy transferred from
A
Cells and other sources
13
Q
What does energy transferred depend on
A
Power
14
Q
What is potential difference
A
The energy transferred per charge passed
15
Q
What does power depend on
A
Current and potential difference
