A circular loop of non-magnetic wire is carrying constant current that is not ch

Question

A circular loop of non-magnetic wire is carrying constant current that is not changing with time or position along the wire. The wire has very little resistance. In the space outside the wire, there is:

A. none of the these

B. a magnetic field because there is moving charge in the wire.    

C. no magnetic field because the current is not changing with time.

D. a magnetic field because the wire is made out of a ferromagnetic material.

E. no magnetic field because there are no currents flowing in the space outside the wire.

Explanation / Answer

E. no magnetic field because there are no currents flowing in the space outside the wire.

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