components of a circuit Flashcards
1
Q
What does a fixed resistor do
A
Limits the current in the circuit
2
Q
What does a variable resistor do
A
Allows the current to be varied
3
Q
What does a thermistor do
A
resistance of a thermistor decreases as the temperature increases
4
Q
what does a light dependent resistor do
A
decreases resistance as the light falling on it gets brighter
5
Q
what does a switch do
A
enables the current to be switched on or off
6
Q
what does an indictor ( bulb ) do
A
emit light as a signal when current passes through it
