BRAINCAKEResistance and Temperature
The resistance of a metal increases with temperature. This is because the positive ions in the metal vibrate more when the temperature is increased.
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Key terms in this lesson
- Potential difference
- The energy transferred per unit charge as charge moves between two points in a circuit.
- Resistance
- The ratio of the potential difference across a component to the current flowing through it, measured in ohms.
More in Electric Current
- Superconductivity
- Electronic Components
- Investigating the Characteristics of Components
- IV Graphs
- Fixed Resistors
- Filament Lamp
- Thermistors and Light Dependent Resistors
- Diodes
All 20 lessons in Electric Current · All AQA AS-level Physics topics