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What happens to compass needles at the E...

What happens to compass needles at the Earth's poles ?

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At the poles, earths field is exactly verticale. So, the campass needless free to rotate in a horizontal plane only, it may point out in any direction.
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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-MAGNETISM AND MATTER-Very Short Answer Questions
  1. A magnetic dipole placed in a magnetic field experiences a net force. ...

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  2. What happens to compass needles at the Earth's poles ?

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  3. What do you understand by the 'magnetization' of a sample ?

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  4. What is the magnetic moment associated with a solenoid ?

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  5. What are the units of magnetic moment, magnetic induction and magnetic...

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  6. Magnetic lines form continuous closed loop. Why ?

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  7. Define magnetic declination.

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  8. Define magnetic inclination or angle of dip.

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  9. Classify the following materials with regard to magnetism : Maganese, ...

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  10. A magnetic dipole placed in a magnetic field experiences a net force. ...

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  11. Do you find two magnetic field lines intersecting ? Why ?

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  12. What happens to compass needles at the Earth's poles ?

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  13. What do you understand by the 'magnetization' of a sample ?

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  14. What is the magnetic moment associated with a solenoid ?

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  15. What are the units of magnetic moment, magnetic induction and magnetic...

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  16. Magnetic lines form continuous closed loop. Why ?

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  17. Define magnetic declination.

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  18. Define magnetic inclination or angle of dip.

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  19. Classify the following materials with regard to magnetism : Maganese, ...

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  20. A closely wound solenoid of 800 turns and area of cross section 2.5 xx...

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