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A diamagnetic material in a magnetic field moves
- a)from stronger to the weaker parts of the field
- b)from weaker to the stronger parts of the field
- c)perpendicular to the field
- d)in none of the above directions
Correct answer is option 'A'. Can you explain this answer?
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A diamagnetic material in a magnetic field movesa)from stronger to th...
Diamagnetic materials are those that possess no permanent magnetic dipole moment. When placed in a magnetic field, the material weakly repels the field, causing the magnetic field lines to be slightly distorted. This repulsion is a result of the induced magnetic moments in the atoms of the material aligning in a way to oppose the external magnetic field.
Diamagnetic materials have no net magnetic moment, unlike paramagnetic or ferromagnetic materials. In paramagnetic materials, the magnetic moments align with the external magnetic field, while in ferromagnetic materials, the magnetic moments align strongly with the external field, resulting in a net magnetization.
Now, let's understand why a diamagnetic material moves from stronger to weaker parts of the magnetic field.
1. Magnetic Field Gradient:
A magnetic field gradient refers to the change in magnetic field strength across space. In a magnetic field gradient, the field strength is stronger in one region and weaker in another. Diamagnetic materials tend to move from regions of higher field strength to regions of lower field strength. This is because the material experiences a repulsive force towards the weaker parts of the field.
2. Lenz's Law:
Lenz's law states that when a change in magnetic field occurs, an induced current is generated that opposes the change. In the case of a diamagnetic material, when it moves from a region of stronger to weaker magnetic field, the change in magnetic field induces a current in the material that creates a magnetic field opposing the external field. This opposition results in a repulsive force, causing the material to move towards the weaker parts of the field.
3. Diamagnetic Susceptibility:
Diamagnetic materials have a negative magnetic susceptibility, which indicates their weak repulsion in a magnetic field. This repulsion causes the material to move away from the stronger parts of the magnetic field and towards the weaker parts.
Conclusion:
In summary, a diamagnetic material moves from stronger to weaker parts of a magnetic field due to the magnetic field gradient, Lenz's law, and the negative magnetic susceptibility of the material. These factors result in a repulsive force that drives the motion of the material towards regions of lower field strength.
Diamagnetic materials have no net magnetic moment, unlike paramagnetic or ferromagnetic materials. In paramagnetic materials, the magnetic moments align with the external magnetic field, while in ferromagnetic materials, the magnetic moments align strongly with the external field, resulting in a net magnetization.
Now, let's understand why a diamagnetic material moves from stronger to weaker parts of the magnetic field.
1. Magnetic Field Gradient:
A magnetic field gradient refers to the change in magnetic field strength across space. In a magnetic field gradient, the field strength is stronger in one region and weaker in another. Diamagnetic materials tend to move from regions of higher field strength to regions of lower field strength. This is because the material experiences a repulsive force towards the weaker parts of the field.
2. Lenz's Law:
Lenz's law states that when a change in magnetic field occurs, an induced current is generated that opposes the change. In the case of a diamagnetic material, when it moves from a region of stronger to weaker magnetic field, the change in magnetic field induces a current in the material that creates a magnetic field opposing the external field. This opposition results in a repulsive force, causing the material to move towards the weaker parts of the field.
3. Diamagnetic Susceptibility:
Diamagnetic materials have a negative magnetic susceptibility, which indicates their weak repulsion in a magnetic field. This repulsion causes the material to move away from the stronger parts of the magnetic field and towards the weaker parts.
Conclusion:
In summary, a diamagnetic material moves from stronger to weaker parts of a magnetic field due to the magnetic field gradient, Lenz's law, and the negative magnetic susceptibility of the material. These factors result in a repulsive force that drives the motion of the material towards regions of lower field strength.
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A diamagnetic material in a magnetic field movesa)from stronger to th...
A diamagnetic material in a magnetic field moves from stronger to the weaker parts of the field
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A diamagnetic material in a magnetic field movesa)from stronger to the weaker parts of the fieldb)from weaker to the stronger parts of the fieldc)perpendicular to the fieldd)in none of the above directionsCorrect answer is option 'A'. Can you explain this answer?
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