Electricity is the flow of charged partical called electron,beetween two obyects that are are at different electrical potentials. This flow can only accur when the two obyects are connected by a suitable electrical conductor.
Eletricity power practically all homes,shops.offices and industry. it is an " easy to use " clean power source that make things work at a flick of switch. Thing such as heating.lighting,machines,applianes tools. When the treated with respect and handle correctly,electricity is perfectly safe but the problem is not everyone is aware how dangerous it can be when it's not kept in it's place i.e on otherside of insulation. it can severely injure or even kill people by using them as conductor.