Required Practical: Investigating Resistance (AQA GCSE Physics Combined Science): Flashcards
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What does this practical investigate?
What does this practical investigate?
I-V characteristics
3 components tested in I-V practical
3 components tested in I-V practical
Filament lamp, diode, resistor at fixed temp
Purpose of variable resistor in circuit
Purpose of variable resistor in circuit
Changes current through circuit
2 measurements recorded at each current
2 measurements recorded at each current
Current and potential difference
Purpose of reversing battery connections
Purpose of reversing battery connections
To get negative current & PD values
Ammeter reading when battery reversed
Ammeter reading when battery reversed
Negative current
Graph plotted for each component
Graph plotted for each component
I-V graph
3 resistor types identified from I-V graph
3 resistor types identified from I-V graph
Ohmic, non-ohmic, diode
How to record PD when battery reversed
How to record PD when battery reversed
Record as negative value
Component kept at fixed temperature
Component kept at fixed temperature
Resistor