A current in a long, straight wire produces a magnetic field. these magnetic field lines
Aradiate out from the wire to infinity.
Bcome in from infinity to the wire.
Cform circles that pass through the wire.
Dform circles that go around the wire.
Aradiate out from the wire to infinity.
Bcome in from infinity to the wire.
Cform circles that pass through the wire.
Dform circles that go around the wire.