# What is the difference between the current and the electric field?

We know that a changing electric field generates a magnetic field and that a changing magnetic field generates an electric field. But does a magnetic field generate a current ?

We also know that a charge generates an electric field.

• The first sentence isn't true as written. – Hal Hollis Jun 13 '17 at 14:58
• Current is the motion of charges due to whatever force, usially an electric field – user126422 Jun 13 '17 at 15:16
• but charges generate an electric field so they generate their own "motor" ? – Romain B. Jun 13 '17 at 15:20

A changing electric field generates a magnetic field and a changing magnetic field generates an electric field. A current generates a magnetic field, but not the other way round.

• Ok so the difference between an electric field and a current is ? – Romain B. Jun 13 '17 at 15:10
• Current is movement of charge. Electric field is an association between points in space and vectors that tells you what force would be experienced by a charge (independent of whether there's actually any charge present) . – The Photon Jun 13 '17 at 15:20
• @Haatox, it's really an electromagnetic field which can support electromagnetic waves that propagate with speed c in vacuum (no electric charge moving or otherwise present). Electric current is the flow of electric charge and electric charge is a property of an object, e.g., an electron, and not an object itself. – Hal Hollis Jun 13 '17 at 15:34
• "A current generates a magnetic field, but not the other way round." A magnetic field does induce a current. – Brad S Jun 13 '17 at 17:13
• @BradS, Changing magnetic field produces current, not just magnetic field. – Mitchell Jun 14 '17 at 18:19