- A common useful conversion is electrical energy –> heat
- These cables that carry electricity around the house have very low electrical resistance so they can make the unwanted conversion of electricity to heat as small as possible.
- Electric irons
- Electric cookers
- Hair dryers
- These cables still require resistance if the current flow is too large the cables themselves will overheat and possibly cause a fire
- Fuses are used to stop this overheating, precisly why the correct fuse or circuit breaker needs to be used