Circuit devices & IV Graphs (Edexcel GCSE Physics): Flashcards
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Practise the cards
14 cards from this deck
What do IV graphs show?
What do IV graphs show?
How changes as varies across a component
Shape of linear component IV graph
Shape of linear component IV graph
Straight line
Example of a linear component
Example of a linear component
Fixed resistor
What a steeper IV graph means
What a steeper IV graph means
Lower resistance
Shape of non-linear component IV graph
Shape of non-linear component IV graph
Curved
Examples of non-linear components
Examples of non-linear components
Filament lamp, diode
Formula for resistance
Formula for resistance
Filament lamp resistance as current increases
Filament lamp resistance as current increases
Increases
Direction diode allows current to flow
Direction diode allows current to flow
One direction only
Diode current before threshold voltage
Diode current before threshold voltage
No current
LDR resistance in bright light
LDR resistance in bright light
Falls
LDR resistance in darkness
LDR resistance in darkness
Highest
Thermistor resistance in hot conditions
Thermistor resistance in hot conditions
Drops
Thermistor resistance in cool conditions
Thermistor resistance in cool conditions
Increases