Ammeter
measures the current in a circuit. must be placed in series
battery
more than one cell in series. provides the potential difference.
cell
provides the potential difference
closed switch
a switch that has turned the circuit 'on'
open switch
a switch that has turned the circuit 'off'
diode
Only allows current through in one direction
fuse
melts when the current is too large
lamp
a bulb in a circuit
LDR - light dependent resistor
it's resistance varying with the intensity of light. low light = resistance high = current low
high light = resistance low = current high
LED - Light emitting diode
only lets current through in one direction. when it does light is given off
resistor
a component of fixed resistance
thermistor
it's resistance varies with temperature
low temp = resistance high = current low
high temp = resistance low = current high
variable resistor
a component that allows you to change the resistance
voltmeter
measures potential difference (voltage). must be placed in parallel.
Ammeter
measures the current in a circuit. must be placed in series
battery
more than one cell in series. provides the potential difference.
cell
provides the potential difference
closed switch
a switch that has turned the circuit 'on'
open switch
a switch that has turned the circuit 'off'
diode
Only allows current through in one direction
fuse
melts when the current is too large
lamp
a bulb in a circuit
LDR - light dependent resistor
it's resistance varying with the intensity of light. low light = resistance high = current low
high light = resistance low = current high
LED - Light emitting diode
only lets current through in one direction. when it does light is given off
resistor
a component of fixed resistance
thermistor
it's resistance varies with temperature
low temp = resistance high = current low
high temp = resistance low = current high
variable resistor
a component that allows you to change the resistance
voltmeter
measures potential difference (voltage). must be placed in parallel.