Circuits Flashcards
1
Q
series circuit
A
- current is the same in all components
- total PD is shared between the components
- total resistance is the sum of each component’s resistance
- one loop
2
Q
parallel circuit
A
- total current is the sum of each component’s current
- PD is the same across all components
- total resistance is less than the resistance value of the smallest individual resistor
3
Q
Cell
A
store of chemical energy
4
Q
Battery
A
two or more cells in series
5
Q
Switch
A
breaks circuit, turning current off
6
Q
Lamp
A
lights when current flows
7
Q
Ammeter
A
measures current
8
Q
Voltmeter
A
measures potential difference
9
Q
Diode
A
current flows one way
10
Q
LED
A
emits light when current flows
11
Q
LDR
A
resistance low in bright light
12
Q
Fuse
A
melts when current is too high
13
Q
Resistor
A
affects the size of current flowing
14
Q
Variable resistor
A
allows current to be varied
15
Q
Thermistor
A
resistance low at high temp
