The basic unit of charge is the electronic charge . The basic unit of magnetic pole in the metric system is the Weber or Ampere.meter. Positive and negative electric charge can exist separately. A positive charge is simply the removal of electrons.
Magnetic poles can only exist in pairs .
An electric field is any region where an electric charge experiences a force. Electric field is a vector quantity. The direction of E is the direction of the force on a positive charge. A magnetic field is any region where a magnetic pole experiences a force. Magnetic field is a vector quantity.