## Summary

- The Hall effect is the creation of voltage \(\epsilon \), known as the Hall emf, across a current-carrying conductor by a magnetic field.
- The Hall emf is given by
\(\epsilon =\text{Blv}\phantom{\rule{0.25em}{0ex}}(B,\phantom{\rule{0.25em}{0ex}}v,\phantom{\rule{0.25em}{0ex}}\text{and}\phantom{\rule{0.25em}{0ex}}l,\phantom{\rule{0.25em}{0ex}}\text{mutually perpendicular})\)

for a conductor of width

*\(l\)*through which charges move at a speed \(v\).

## Glossary

### Hall effect

the creation of voltage across a current-carrying conductor by a magnetic field

### Hall emf

the electromotive force created by a current-carrying conductor by a magnetic field, \(\epsilon =\text{Blv}\)