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| 1. |
Why are the magnetic field lines are closed curves? |
| Answer» The imaginary lines representing magnetic field around a magnet are known as magnetic field lines.(i) Any point on magnetic field line indicates the direction of force on a North pole kept there. If two lines meet, it means that force is acting in two directions at that point which is not possible.(ii) The direction of field lines outside a magnet is from north pole to south pole while it is from south to north pole inside the magnet and thus forms closed curves. | |