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"The strength of the earth's magnetic fi...

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

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R G PUBLICATION-MAGNETISM AND MATTER-EXERCISE
  1. Draw the magnetic field lines of a bar magnet.

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  2. State Gauss's law.

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

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  4. Differentiate between magnetic equator and geographic equator.

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

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  6. Define magnetic declination.

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

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  8. Distinguish between dia and paramagnetic substance.

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

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

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

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

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

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  14. Distinguish between magnetic dipole and electric dipole.

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  15. Define tangent law in magnetism.

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

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  17. Establish the Coulomb's law in magnetism.

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  18. Compare the magnetic fields on a bar magnet and a solenoid.

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  19. What is the probable cause of earth magnetism?

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  20. Distinguish between permeability and susceptibility.

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