Required Practical: Investigating Resistance (OCR GCSE Physics A (Gateway Science Suite)): Flashcards
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What does this practical investigate?
What does this practical investigate?
I-V characteristics
Three types of resistors identified in this practical
Three types of resistors identified in this practical
Ohmic, non-ohmic, and diode
Purpose of variable resistor in the circuit
Purpose of variable resistor in the circuit
To change the current through the circuit
What to record for each current
What to record for each current
Current and potential difference
Why battery wires are swapped over
Why battery wires are swapped over
To reverse direction and get negative values
What ammeter displays when wires are swapped
What ammeter displays when wires are swapped
Negative current
How to record p.d. when wires swapped
How to record p.d. when wires swapped
As a negative value
Three components that can be tested
Three components that can be tested
Filament lamp, diode, or resistor at fixed temperature
Type of graph plotted for each component
Type of graph plotted for each component
I-V graph
Purpose of plotting I-V graph
Purpose of plotting I-V graph
To identify which type of resistor each component is