Question

If a conductor have no electric current then what will be the magnitude of MAGNETIC FIELD of the same conductor?

Answer 1

Answer:

We use →B to denote a magnetic field and arrows on field lines to show the direction of the magnetic field. Note that if there is no current there will be no magnetic field. The direction of the current in the conductor (wire) is shown by the central arrow

Explanation:

Answer 2

Answer:

A more direct answer to your question: Yes, there are both electric fields and magnetic fields around the conductor while there's current flowing through it. This is guaranteed by Maxwell's equations, and the fact that current is proportional to the electric field in a conductor.