Which of the following materials has permeability slightly less than that of free space?

A. Paramagnetic

B. Non- magnetic

C. Ferromagnetic

D. Diamagnetic

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  1. The reluctance of a magnetic circuit is not dependent on which of the following?
  2. The ability of a mechanically stressed ferromagnetic wire to recognize rapid switching of magnetization…
  3. The force between two magnetic poles varies with the distance between them. The variation is ______…
  4. The emf induced in a coil due to the changing current of another neighboring coil is called
  5. A 200-watt lamp working for 24 hours will consume approximately _____ units.
  6. Hysteresis loss can be reduced by one of the following.
  7. What is the SI unit of conductivity?
  8. A permanent magnet does not exert a force on
  9. The potential at a point due to a charge is 15 V. If the distance is times, the potential at the point…
  10. The ratio between the intensity of magnetization produced in a substance to the magnetizing force producing…
  11. The process by which an emf and hence current is generated or induced in a conductor when there is a…
  12. Permeance of a magnetic circuit is _________ the cross-sectional area of the circuit.
  13. A test charge means a charge of
  14. The permeability of permalloy is
  15. The resistance of a material is ____________ its area of cross-section.
  16. The force of attraction or repulsion between two magnetic poles is directly proportional to their strengths.
  17. What is the reluctance of a magnetic path having a length of 2x 10^-3m and crosssectional area of 2.5…
  18. If on looking at any one end of a solenoid; the direction of current flow is found to be clockwise then…
  19. A law relating between the magnetic and electric susceptibilities and the absolute temperatures which…
  20. One that has magnetic poles produced by internal atomic structure with no external current necessary
  21. The magnitude of the induced emf in a coil is directly proportional to the rate of change of flux linkages.…
  22. This paper does not exhibit electricity because it contains the same number of
  23. The contribution to the ionization in an ionization chamber by electrons liberated from t he walls.
  24. The tiniest element of matter
  25. If the number of valence electrons of an atom is more than 4a the substance is called
  26. The temperature coefficient of resistance of insulators is
  27. A t/m is a unit of
  28. The emf produced in a wire by its motion across a magnetic field does not depend upon the
  29. The force between two magnetic poles is _____ the relative permeability of the medium.
  30. The hot resistance of an incandescent lamp is about _______ its cold resistance.