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प्रश्न
Write any three properties of magnetic lines of force.
List the properties of magnetic lines of force.
state two properties of magnetic lines of force.
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उत्तर
Properties of magnetic lines of force:-
- Magnetic lines of force (or magnetic field lines) are closed continuous curves. They start from the North Pole and end at the South Pole.
- The tangent at any point on a magnetic line of force gives the direction of the magnetic field at that point.
- No two magnetic lines of force can intersect each other.
- Magnetic lines of force are crowded where the magnetic field is strong, and they are far from each other where the field is weak.
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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?
Solve the following problem.
Two small and similar bar magnets have a magnetic dipole moment of 1.0 Am2 each. They are kept in a plane in such a way that their axes are perpendicular to each other. A line drawn through the axis of one magnet passes through the center of other magnet. If the distance between their centers is 2 m, find the magnitude of the magnetic field at the midpoint of the line joining their centers.
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