BRAINCAKEResistance
Each component resists the flow of charge carriers through it.
Metals are made of a lattice of vibrating positive metal ions surrounded by delocalised electrons. When you apply a potential difference across the metal, electrons flow towards the positive end.
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Key terms in this lesson
- energy
- The capacity of a system to do work.
- potential difference
- The work done, or energy transferred, per unit charge as charge moves between two points in a circuit.
More in Electricity
- Current and Drift Velocity
- Potential Difference
- Electromotive Force
- The Electron Gun
- Ohm's Law
- Temperature and Resistance
- IV Graphs
- Diodes
All 30 lessons in Electricity · All OCR AS-level Physics topics