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Electromagnets are made of soft iron bec...

Electromagnets are made of soft iron because soft iron has

A

low retentivity and high coercive force

B

high retentivity and high coerive force

C

low retentivity and low coercive

D

high retentivity and low coercive force

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The correct Answer is:
C
Electromagnetics are made of soft iron because soft iron has low retentivity and lw coercive force or low coercivity . Soft iron is a soft magnetic material.
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RESONANCE-MAGNETIC FIELD AND FORCES-Exercise
  1. A conductor in the form of a right angle ABC with AB=3 cm and BC = 4 c...

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  2. The intensity of uniform magnetic field between poles of a magnetic is...

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  3. Four wires each of length 2.0 meters area bent into four loops P,Q,R a...

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  4. An irregular loop of conducting wire is lying on a frictionless table ...

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  5. In a cyclotron, the angular frequency of a charged particle is indepen...

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  6. When a small magnetising field H is applied to a magnetic material, th...

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  7. How does the magnetic susceptibility of a paramagnetic material change...

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  8. Consider the following statements for a paramagnetic substance kept in...

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  9. Which of the following relations is not correct?

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  10. The hysteresis cylcle for the material of a permanent magnet is

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  11. Select the incorrect alternatives(s):

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  12. The desirable properties for making permanent magnets are

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  13. (a)Soft iron is a conductor of electricity. (b) It is a magnetic mater...

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  14. Soft iron is used in many electrical machines for:

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  15. For protecting a sensitive equipment from the external magnetic field,...

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

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  17. What is the net magnetic moment of an atom of a diamagnetic material?

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  18. The magnetic susceptibility of any paramagnetic material changes with ...

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  19. Statement 1: A direct uniformly distributed current flows through a so...

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  20. Statement 1: A charged particle undergoes non-rectilinear motion in a ...

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