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Electromagnets are made of soft iron bec...

Electromagnets are made of soft iron because soft iron has

A

high susceptibility and low retentivity,

B

low susceptibility and high retentivity,

C

low susceptibility and low retentivity.

D

high susceptibility and high retentivity,

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The correct Answer is:
A
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TARGET PUBLICATION-MAGNETISM-MCQs
  1. If theta1 and theta2 be the apparent angles of dip observed in two ver...

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  2. The material suitable for making electromagnets should have

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  3. Electromagnets are made of soft iron because soft iron has

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  4. Consider a point on an equatorial axis of a short bar magnet. The dire...

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  5. A small bar magnet has a magnetic moment 1.2 A-m^(2). The magnetic fie...

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  6. The bar magnet produces magnetic induction of 4 xx 10^(-5)T at a point...

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  7. The magnetic induction at a point P on the axis is equal to the magnet...

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  8. Two identical short bar magnets, each having magnetic moment of 10Am^(...

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  9. Two short bar magnets of length 1cm each have magnetic moments 1.20 Am...

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  10. The ratio of magnetic fields due to a bar magnet at the two axial poin...

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  11. Which magnetic field is closer to that of a bar

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  12. A circular loop and a square loop are formed from the same wire and th...

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  13. A charge Q is spread uniformly over an insulated ring of radius R.What...

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  14. At neutral point, the horizontal component of the magnetic field due t...

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  15. Assertion: If a compass needle be kept at magnetic north pole of the e...

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  16. A bar magnet is hung by a thin cotton thread in a uniform horizontal m...

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  17. A circular coil of diameter 10 cm is placed in a magnetic field of ind...

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  18. Assertion: The magnetic poles of earth do not coincide with the geogra...

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  19. The magnetic compass is not useful for navigation near the magnetic po...

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

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