Physics › Section P · Magnetism › Topic P.3
The Hall effect and force on a wire
Charges drifting along a wire feel the same magnetic force as charges flying through empty space. Inside the wire that force produces a small sideways voltage, the Hall effect, and it also pushes the wire itself, which is how loudspeakers and motors work.
In this topic
- Moving charges inside a conductor
- The Hall effect
- What the Hall effect reveals
- Worked example: the Hall emf in a copper strip
- Hall probes and flow meters
- Force on a current-carrying wire
- Worked example: a wire in a magnet's gap
- Worked example: a floating wire
- Wires at work
- Common mistakes to avoid
- Key takeaways
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