Changes

: [[Wire]]s are [[heated]] by an [[Electrical Current|electrical current]] passing through them.

: [[Wire]]s are designed to be a low [[Electrical Resistance|resistance]] in order to allow an [[Electrical Current|electrical current]] through them without losing too much [[energy]] by [[heating]] the [[wire]]s.

: When there is a [[Electrical Current|current]] in a [[wire]] the [[wire]] has a [[Magnetic Field|magnetic field]] which acts around that [[wire]].

| style="height:20px; width:300px; text-align:center;" |The direction of the [[Magnetic Field|magnetic field]] can be shown by the 'right hand thumb rule' with thumb pointing in the direction of the [[Electrical Current|current]] the fingers will wrap around in the direction of the [[Magnetic Field|magnetic field]].

|}