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A bar magnet of magnetic moment M is cut...

A bar magnet of magnetic moment M is cut into two parts of equal length. The magnetic moment of either part is

A

M

B

2M

C

`(M)/(2)`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
B
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FULL MARKS-MAGNETISM AND MAGNETIC EFFECTS OF ELECTRIC CURRENT -ADDITIONAL QUESTIONS SOLVED
  1. At magnetic poles the angle of dip is

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  2. The horizontal component of earth's magnetic field at a place is 3.6 x...

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  3. A bar magnet of magnetic moment M is cut into two parts of equal lengt...

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  4. A magnetic needle suspended by a silk thread is vibrating in the earth...

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  5. Demagnetisation of a magnet can be done by

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  6. All the magnetic materials lose their magnetic properties when

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  7. The relative permeability of a paramagnetic material is

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  8. The relative permeability of a diamagnetic material is

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  9. Which of the following is most suitable for the core of an electromagn...

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  10. Soft iron is used in many parts of electrical machines for

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  11. When a diamagnetic substance is brough near the north or the south pol...

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  12. At Curie point, a ferromagnetic material becomes

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  13. Magnetic permeability is maximum for

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  14. The material of a permanent magnet has

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  15. Which one of the following is not made of soft iron ?

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  16. A dip circle is at right angles to the magnetic meridian. The apparent...

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  17. A magnetic needle is placed in a uniform magnetic field. It experienec...

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  18. Relative permeability of iron is 5500. Its magnetic susceptibility is

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  19. The inherent property of all matter is

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  20. A magnetic needle suspended freely

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