The Nature of Electromagnetic Induction
|Title||The Nature of Electromagnetic Induction|
|Author(s)||Oleg D Jefimenko|
|Keywords||electromagnetic induction, electric fields, magnetic fields|
Electromagnetic industion is usually attributed to generation of electric fields by changing magnetic fields to generation of magnetic fields by changing electric fields. However, an analysis of the causal relations in time-variable electric and magnetic fields has shown that neither of the two fields can create the other, and that in time-dependent systems both fields are simultaneously created by a common causative source--the time-variable electric current. A time-variable electric current creates an electric field whose direction is parallel to the current. This field exerts a "dragging force" on electric charges located within nearby conductors thus creating induced electric currents in them.