Required practical - Investigating I-V characteristics (AQA GCSE Physics Combined Science): Flashcards
📚Flashcards
Practise the cards
15 cards from this deck
ShowHide
Practise the cards
15 cards from this deck
I-V characteristic definition
I-V characteristic definition
Graph of current vs voltage for a component
3 components in I-V practical
3 components in I-V practical
Resistor, filament lamp, diode
What ammeter measures
What ammeter measures
Current
What voltmeter measures
What voltmeter measures
Potential difference (voltage)
Ammeter position in circuit
Ammeter position in circuit
In series with component
Voltmeter position in circuit
Voltmeter position in circuit
In parallel across component
Variable resistor purpose in I-V practical
Variable resistor purpose in I-V practical
To change the voltage
Why reverse battery in I-V practical
Why reverse battery in I-V practical
To get negative values for complete picture
I-V graph y-axis shows
I-V graph y-axis shows
Current ()
I-V graph x-axis shows
I-V graph x-axis shows
Potential difference ()
Resistor I-V graph shape
Resistor I-V graph shape
Straight line through origin (ohmic)
Filament lamp I-V graph shape
Filament lamp I-V graph shape
Curved line (resistance increases as it heats)
Diode I-V characteristic property
Diode I-V characteristic property
Current only flows in one direction
Why avoid high currents in I-V practical
Why avoid high currents in I-V practical
Components heat up, changing resistance & affecting readings
Purpose of switch in I-V circuit
Purpose of switch in I-V circuit
Control current flow & prevent dangerous currents