Circuit devices & IV Graphs (Edexcel GCSE Physics Combined Science): Flashcards
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Practise the cards
14 cards from this deck
What do IV graphs show?
What do IV graphs show?
How current changes as potential difference varies
IV graph shape for linear components
IV graph shape for linear components
Straight line
Current vs PD in linear components
Current vs PD in linear components
Directly proportional
Example of linear component
Example of linear component
Fixed resistor
Meaning of (0,0) on IV graph
Meaning of (0,0) on IV graph
No potential difference means no current
Steeper IV graph indicates
Steeper IV graph indicates
Lower resistance
IV graph shape for non-linear components
IV graph shape for non-linear components
Curved
Resistance formula using and
Resistance formula using and
Filament lamp: resistance as current increases
Filament lamp: resistance as current increases
Resistance increases
Directions a diode allows current to flow
Directions a diode allows current to flow
One direction only
Current in diode before threshold voltage
Current in diode before threshold voltage
No current flows
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