Physics A-Level
Direct proportionality
What Direct proportionality means in Physics A-Level, as defined for AQA.
Definition of Direct proportionality
Check what you remember
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Reference: AQA
The special case in which current is directly proportional to potential difference, shown by a straight line through the origin.
Topics that use Direct proportionality
- Current–voltage characteristics (AQA A-Level)
Related terms
- Filament lamp
- Graph interpretation
- Ideal ammeter
- Ideal assumption
- Ideal voltmeter
- Non-ohmic behaviour
- Ohmic and non-ohmic behaviour
- Ohmic and non-ohmic conductors
Using Direct proportionality in the exam
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