Circuit Symbols Flashcards
1
Q
Switch
A
Enables current to be switched on or off
2
Q
Cell
A
Pushes electrons around a complete circuit
3
Q
Battery
A
Supplies electrical energy, consists of two or more cells
4
Q
Diode
A
Allows current in one direction only
5
Q
LED
A
Light emitting diode emits light when a current pases through it in the correct direction
6
Q
Resistor
A
Limits the current in a circuit
7
Q
Variable resistor
A
Allows current to be varied
8
Q
Bulb
A
Emits light as a signal when a current passes through it
9
Q
Fuse
A
Breaks the circuit if current exceeds a certain amount
10
Q
Voltmeter
A
Measures the potential difference ( voltage )
11
Q
Ammeter
A
Measures electrical current
12
Q
Thermistor
A
Temperature dependant resistor. Has a high resistance when temperature is low
13
Q
LDR
A
Light dependent resistor. Has a high resistance when the levels of light are low
