TODAY QUESTION IS Q. (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.
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magnetic field lines are imaginary lines that represents the magnetic field line across a magnet.
the direction can be determined by placing a compass over the field line. the direction towards which the needle points, is north.
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