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R G PUBLICATION-MAGNETISM AND MATTER-EXERCISE
- A short bar magnet plaved with its axis at 30^@ with a uniform externa...
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- Define the elelemts of the earth's magnetic field.
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- Define magnetization and magnetic intensity.
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- From which source, the word 'magnet' is derived?
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- State Gauss's law for magnetism.
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- What is dynmo effect?
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- What is geographic meridian?
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- What is magnetic susceptibility?
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- What is relative magnetic permiability?
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- Write the expressions for magnetisation M and magnetic intesity H.
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- What is diamagnetism?
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- What is paramagnetism?
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- What is Curie's law?
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- Write the limitations of Curie's law.
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- Alnico, an alloy of iron, aluminium, nickel, cobalt and copper are har...
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- What are hard ferromagnetic and soft ferromagnetic materials? Give on...
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- Define curie temperature.
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- Draw the B-H curve for ferromagnetic materials.
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- What is retentivity ?
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- What is coercivity?
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