Current, Resistance & Potential Difference (AQA GCSE Physics Combined Science): Flashcards
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Function of potential difference
Function of potential difference
Drives electric charges to flow through a circuit
Unit of potential difference
Unit of potential difference
Volts (V)
Instrument used to measure potential difference
Instrument used to measure potential difference
Voltmeter
How voltmeter connects to component
How voltmeter connects to component
In parallel
Effect of resistance on charge flow
Effect of resistance on charge flow
Slows it down
Unit of resistance
Unit of resistance
Ohms (Ω)
Equation relating V, I, and R
Equation relating V, I, and R
Formula for resistance from V and I
Formula for resistance from V and I
How resistance varies with wire length
How resistance varies with wire length
Directly proportional
Graph feature showing direct proportionality
Graph feature showing direct proportionality
Straight line passing through origin