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: '''Heaters''' are usually long lengths of [[wire]] which a high [[Electrical Resistance|resistance]].
: As a [[Electrical Current|current]] passes through a [[wire]] [[electron]]s in the [[Electrical Current|current]] [[collide]] with [[ion]]s in the [[metal]] [[lattice]] causing them to [[vibrate]]. This increases the [[temperature]] of the [[wire]].
===Energy Transfers===
: In an '''electrical heater''' [[Work Done#Work Done by Electricity|electrical work]] is done to [[heat]] an [[object]] or the surroundings.
: [[Energy]] is [[Energy Transfer|transferred]] into the [[Thermal Energy Store|thermal energy store]] of the '''heater'''.
: [[Energy]] is [[Energy Transfer|transferred]] by [[Thermal Conduction|thermal conduction]], [[convection]] and by [[radiation]] to the [[Thermal Energy Store|thermal energy store]] of the surroundings.