Electricity

Our lesson this week is about electricity and  that electricity is helpful in our lives.
Conduction is a flow of electric charge through the use of a medium.Such as a wire or ions
or electrolyte.Induction is the  process of heating an electrically conducting object. Induction
allows the the targeted heating.And also surface hardening.Friction is the friction between two solid

objects that are not moving  relative to each other.