Ciruit Devices Flashcards
What is current directly proportional to
Potential difference
What happens if the current increases
The resistance increases as the temperature increases
What will happen when the diode is used?
Current will flow in one direction as it has very high resistance
What is the growth for resistors and wires?
Straight lines going through x and y 0
What is the graph for filament lamps?
Through 0,0 and an s shape
What is the graph for diode?
Starts above the x axis and raises in the positive x
What happens if there is bright light for a LDR
The resistance falls
And opposite in darkness where resistance is the highest
Where are LDRs used?
Used for night lights and burglar alarms
What happens if there are hot and cool conditions?
Hot means lower resistance
Cool conditions increase resistance
Where are thermistors used?
In car engines and electronic thermostats
