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The emf produced in a wire by its motion across a magnetic field does not depend upon the

A. Diameter of the wire

B. Length of the wire

C. Orientation of the wire

D. Flux density of the field

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  1. The reluctance of the magnetic circuit is ________ relative permeability of the material comprising…
  2. The relative permeability of a magnetic material is 10^5. What is its permeability?
  3. A law stating that the magnetic susceptibilities of most paramagnetic substances are inversely proportional…
  4. If the number of valence electrons of an atom is less than 4a the substance is called
  5. Bonding of atoms that is due to the force of attraction between positive ions and a group of negative…
  6. A magnetic circuit carries a flux iin the iron part and a fluxgin the air gap. What is the leakage coefficient?
  7. The branch of Engineering which deals with the magnetic effect of electric current is known as
  8. A 6- V battery is connected across a solenoid of 100 turns having a resistance of 2 ?a Calculate the…
  9. Two similar polesa each 1Wba placed 1 m apart in air will experience a repulsive force of
  10. The phenomenon by which a magnetic substance becomes a magnet when it is place near a magnet
  11. A magnetic flux of 2.5 x10^4 Wb through an area of 5 x10^4 square meters results in
  12. What is another name for relative permittivity?
  13. If the number of valence electrons of an atom is exactly 4a then the substance is called
  14. Flux linkages equals
  15. A magnetizing force of 1000 AT/m will produce a flux density of __________ i
  16. The emf induced in a coil due to the change of its own flux linked with it is called
  17. What is the main advantage of temporary magnets?
  18. The point in a magnet where the intensity of magnetic lines of force is maximum
  19. If the relative permittivity of a material is 10a then its permittivity is
  20. A negatively charge body has
  21. Paramagnetic substance has a relative permeability of
  22. Which of the following has the least number of valence electrons?
  23. What determines the value of the temperature coefficient of resistance of a material?
  24. Steel is hard to magnetize because of its
  25. In electro-mechanical conversion devices like generators and motors the reason why a small air gap is…
  26. Hysteresis is a phenomenon of _________ in a magnetic circuit.
  27. A theorem which states that an electric current flowing in a circuit produces a magnetic field at external…
  28. The reluctance of a magnetic circuit varies with
  29. The magnetic flux through a wire loop in a magnetic field does not d
  30. Which of the following materials has permeability slightly less than that of free space?