write the important properties of magnetic lines of force
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Magnetic field
When a positively charged particle moves in a uniform magnetic field, then the direction of the velocity of the particle is perpendicular to the field. The magnetic force always acts in a direction perpendicular to the motion of the charge.The space or the region around a magnet within which magnetic force is exerted on other magnet is called as themagnetic field.

To locate the magnetic field of a bar magnet, we use a magnetic compass. When a magnetic compass is kept away from the magnet, it doesn’t deflect. When a magnetic compass is brought closer to the magnet it deflects. If the magnetic field lines are very close to each other in a particular region, then the strength of the magnetic field is very strong, and if the magnetic field lines are far away then the magnetic field is very weak.
It is expressed in the unit Tesla.
When a positively charged particle moves in a uniform magnetic field, then the direction of the velocity of the particle is perpendicular to the field. The magnetic force always acts in a direction perpendicular to the motion of the charge.The space or the region around a magnet within which magnetic force is exerted on other magnet is called as themagnetic field.

To locate the magnetic field of a bar magnet, we use a magnetic compass. When a magnetic compass is kept away from the magnet, it doesn’t deflect. When a magnetic compass is brought closer to the magnet it deflects. If the magnetic field lines are very close to each other in a particular region, then the strength of the magnetic field is very strong, and if the magnetic field lines are far away then the magnetic field is very weak.
It is expressed in the unit Tesla.
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