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Question
Define magnetic field lines. Describe an activity to draw a magnetic field line outside a bar magnet from one pole to another pole.
Solution
Magnetic field lines:
Magnetic field is the space around a magnet wherein magnetic force can be felt.
The magnetic field lines of a bar magnet can be mapped using a magnetic compass. The compass can be moved from one pole of the bar magnet to another pole. We can trace the field lines by moving the compass gradually and drawing a corresponding line which the compass would trace while following a particular line of force.
In this activity, we will get a magnetic field pattern around the magnet. This also allows us to see the magnetic field lines leaving the north pole of the magnet and enter its south pole.
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