(a) What are 'magnetic field lines'? How is the direction of a magnetic field at a point determined?(b) Draw two field lines around a bar magnet along its length on its two sides and mark the field directions on them by arrow marks.(c) List any three properties of magnetic field lines.
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Magnetic field lines are a visual tool used to represent magnetic fields. They describe the direction of the magnetic force on a north monopole at any given position. Because monopoles are not found to exist in nature.
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