Question.
Which of the following correctly describes the magnetic field near a long straight currentcarrying wire ?
(1) The field consists of straight lines perpendicular to the wire.
(2) The field consists of straight lines parallel to the wire.
(3) The field consists of radial lines originating from the wire.
(4) The field consists of concentric circles centered on the wire.
Which of the following correctly describes the magnetic field near a long straight currentcarrying wire ?
(1) The field consists of straight lines perpendicular to the wire.
(2) The field consists of straight lines parallel to the wire.
(3) The field consists of radial lines originating from the wire.
(4) The field consists of concentric circles centered on the wire.
solution:
The magnetic field lines around a long straight current-carrying conductor are concentric circles with the conductor located at their centre.
Thus,
the option (4) is correct.
The magnetic field lines around a long straight current-carrying conductor are concentric circles with the conductor located at their centre.
Thus,
the option (4) is correct.