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Which of the following is responsible fo...

Which of the following is responsible for the earth's magnetic field?

A

Convective current in earth 's core .

B

Diversive current in earth's core.

C

Rotational motion of earth.

D

Translation motion of earth .

Text Solution

Verified by Experts

The correct Answer is:
a
(a) The earth.s core is hot and molten. Hence, convective current in earth.s core is responsible for it.s magnetic field
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DISHA PUBLICATION-MAGNETISM AND MATTER-EXERCISE-1:CONCEPT BUILDER (TOPICWISE)
  1. A steel wire of length l has a magnetic moment M. It is bent in L-shap...

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  2. A circular coil of 16 turns and radius 10cm carrying a current of 0.75...

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  3. Which of the following is responsible for the earth's magnetic field?

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  4. A compass needle whose magnetic moment is 60 Am^(2), is directed towar...

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  5. The horizontal component of the earth's magnetic field is 3.6 xx 10^(-...

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  6. The work done in turning a magnet of magnetic moment 'M' by an angle o...

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  7. A short magnet of length 4 cm is kept at a distance of 20 cm to the ea...

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  8. A short bar magnet with its north pole facing north forms a neutral po...

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  9. At the magnetic north pole of the earth, the value of horizontal compo...

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  10. At a certain place , horizontal component of earth's field is sqrt3 ti...

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  11. At a certain place the angle of dip is 30^(@) and the horizontal compo...

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  12. A bar magnet is oscillating in the earth's magnetic field with a perio...

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  13. Horizontal component of earth's field at a height of 1 m from the surf...

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  14. The earth's magnetic field lines resemble that of a dipole at the cent...

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  15. A current carryingcoil is placed with its axis perpendicular to N-S di...

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  16. The B-H curve (i) and (ii) shown in fig associated with

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  17. The mensicus of a liquid contained in one of the limbs of a narrow U-t...

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  18. If a diamagnetic solution is poured into a U-tube and one aem of this ...

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  19. The variation of magnetic susceptibility (chi) with temperature for a ...

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  20. If a diamagnetic substance is brought near north or south pole of a ba...

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