circuits symbols Flashcards
(12 cards)
1
Q
battery or cell
A
provides electrical energy by converting chemical energy
2
Q
switch
A
used to turn a circuit on (open) or of (closed)
3
Q
bulb
A
emits light
4
Q
fixed resistor
A
limits the passage of electrical current and has a resistance that does not change
5
Q
variable resistor
A
an electrical component that allows you to change the resistance of a circuit
6
Q
fuse
A
protects against excessive current
7
Q
diode
A
allows the current to flow in one direction
8
Q
thermistor
A
where the resistance changes with temperature
9
Q
light emitting diode
A
emits light when an electric current flows through it
10
Q
light dependent resistor
A
where the resistance changes depending on how much light it receives
11
Q
ammeter
A
measures the electrical current in amperes
12
Q
voltmeter
A
measures potential different in volts
