What is EMF (Electromagnetic Field)?

An electromagnetic field is created by accelerating electric charges. A stationary charge will create an electric field in the encompassing space. A magnetic field is also generated, in the event that the charge is moving. An electric field can be created likewise by a changing magnetic field. The electromagnetic field is created by mutual collaboration of electric and magnetic fields, which is having its own existence in space apart from the currents with which it may be connected.