In this video you will get the content related to the chapter Magnetism and Matter, specially how magnetic field arises due to a bar magnet
Magnetism and Matter -Magnetic Field Due to Bar Magnet
These field lines are developed to visualize the effect of the magnetic field. If we imagine a number of small compass needles around a magnet, each compass needle experiences a torque to the field of the magnet. The path along which this compass needles are aligned is known as magnetic lines of force
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