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प्रश्न
Answer the following question.
Write the four important properties of the magnetic field lines due to a bar magnet.
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उत्तर
Important properties of magnetic field lines due to a bar magnet:
- Field lines form a close loop
- Field lines do not intersect
- Degree of the closeness of lines represents the relative strength of the field in regions
- The direction of a magnetic field at a point is along the tangent to a line at that point
संबंधित प्रश्न
Two bar magnets are placed close to each other with their opposite poles facing each other. In absence of other forces, the magnets are pulled towards each other and their kinetic energy increases. Does it contradict our earlier knowledge that magnetic forces cannot do any work and hence cannot increase kinetic energy of a system?
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A magnetic pole of a bar magnet with a pole strength of 100 A m is 20 cm away from the centre of a bar magnet. The bar magnet has a pole strength of 200 A m and has a length of 5 cm. If the magnetic pole is on the axis of the bar magnet, find the force on the magnetic pole.
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