Required Practical: Investigating I–V Characteristics (AQA GCSE Physics): Flashcards
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14 cards from this deck
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Practise the cards
14 cards from this deck
Formula for resistance
Formula for resistance
Resistance & wire length relationship
Resistance & wire length relationship
Directly proportional
Zero error definition
Zero error definition
Systematic error; reading when true value is zero
Treating zero error in readings
Treating zero error in readings
Subtract it from all readings
Temperature effect on wire resistance
Temperature effect on wire resistance
Resistance increases
Reducing heating in wire
Reducing heating in wire
Use low P.D. to keep current low
When to turn on current in experiment
When to turn on current in experiment
Only when taking a reading
I-V characteristic curve shows
I-V characteristic curve shows
Relationship between current & voltage in component
I-V graph shape for resistor
I-V graph shape for resistor
Straight line
Straight line I-V graph means
Straight line I-V graph means
Ohm's law is obeyed
Diode I-V characteristic
Diode I-V characteristic
Current flows one direction only; curve shape
Filament bulb I-V characteristic
Filament bulb I-V characteristic
Curve; resistance increases as temperature rises
Expected result for resistor
Expected result for resistor
Straight-line graph (constant resistance)
Procedure for wire resistance practical
Procedure for wire resistance practical
Change wire length, measure resistance each time