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Write a short note on "Bar magnet"....

Write a short note on "Bar magnet".

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R G PUBLICATION-MAGNETISM AND MATTER-EXERCISE
  1. S.I. unit of magnetic dipole is

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  2. What is the potential energy of a dipole when it is perpendicular to ...

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  3. Write a short note on "Bar magnet".

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  4. Draw the magnetic field lines of a bar magnet.

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  5. State Gauss's law.

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  6. "The strength of the earth's magnetic field varies from place to place...

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  7. Differentiate between magnetic equator and geographic equator.

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  8. The earth's magnetic field at the equator is approximately 0.4G. Esti...

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  9. Define magnetic declination.

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  10. In the magnetic meridian of a certain place, the horizontal component ...

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  11. Distinguish between dia and paramagnetic substance.

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  12. What is ferromagnetism? What are the ferromagnetic substance?

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  13. "A soft iron core in solenoid acts as an electromagnet". Explain.

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  14. In which direction would a compass free to move in the vertical plane ...

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  15. "A system displaying a hystersis loop such as a ferromagnet, is a devi...

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  16. Why is diamagnetism, in contrast, almost independent of temperature?

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  17. Distinguish between magnetic dipole and electric dipole.

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  18. Define tangent law in magnetism.

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  19. What is meant by magnetic field and magnetic field intesity?

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  20. Establish the Coulomb's law in magnetism.

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