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Magnetic Field due to Current Carrying Conductor | CK-12 Foundation Magnetic Field due to a Straight Current Carrying Conductor
The Magnetic field lines around a straight conductor carrying current are concentric circles whose centres lie on the wire. The direction of magnetic field lines can be determined using Right-Hand Thumb Rule.
Answer:
The Magnetic field lines around a straight conductor carrying current are concentric circles whose centres lie on the wire. The direction of magnetic field lines can be determined using Right-Hand Thumb Rule.
Factors affecting the strength of magnetic field around a straight current carrying conductor
1. Magnetic field strength is directly proportional to the magnitude of current flowing in the conductor. i.e.
B∝I
, greater the current in the conductor, stronger will be the magnetic field produced.
2. Magnetic field strength is inversely proportional to the distance from the wire i.e.
B∝1r
, greater the distance from the current carrying conductor, weaker will be the magnetic field.
The following video shows that magnetic lines of forces are concentric circles around a straight current carrying conductor.