Physics

The Bar Magnet and Magnetic Field Lines

छड़ चुम्बक और चुम्बकीय क्षेत्र रेखाएँ

In this Class 12 Physics topic from the chapter Magnetism and Matter, students study a bar magnet as a magnetic dipole and learn how its magnetic field is represented by field lines. They examine the direction of the field using the tangent to a line, interpret greater line density as a stronger field, and understand why magnetic field lines never intersect. The topic also explains that field lines form closed curves: outside the magnet they run from the north pole to the south pole, and inside it they return from south to north.