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Indicate the zero - potential line of a magnet . |
Answer» Solution :The PERPENDICULAR bisector of the magnetic axis of a bar magnet is the zero - potential line [ Fig] because , any point lying on this line is equidistant from the two POLES of the magnetic . Let O be any point on the perpendicular bisector of the magnetic axis of the magnet NS having POLE - strength`q_(m)`. If the distance of the point O from each pole is r , then the potential at O is , `V=(q_(m))/(r)-(q_(m))/(r)=0`
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