Magnetic Effects of Electricity current
Which of the following correct describes the magnetic field near a long straight wire?
- The field consists of straight lines perpendicular to the wire
- The field consists of straight lines parallel to the wire.
- The field consists of radial lines originating from the wire.
- The field consists of concentric circles centred on the wire.
The magnetic field produced by a straight long current-carrying conductor is represented by magnetic field lines that are concentric with their centre at the axis of the conductor.
Correct answer: D