Residual magnetism refers to the flux densitya which exists in the iron core when the magnetic field intensity is

A. Minimized

B. Reduced to zero

C. Maximize

D. Unity

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  1. The phenomenon by which a magnetic substance becomes a magnet when it is place near a magnet
  2. The air space between poles of magnets
  3. The straight line passing through the two poles of magnet is called
  4. Electron is a Greek word for
  5. The magnetic flux of 2000 lines is how many Maxwells?
  6. The temperature coefficient of resistance of insulators is
  7. The emf induced in a coil due to the changing current of another neighboring coil is called
  8. The property of magnetic materials of retaining magnetism after withdrawal of the magnetizing force…
  9. The emf produced in a wire by its motion across a magnetic field does not depend upon the
  10. The force acting on a unit n- pole placed at that point is called
  11. The magnitude of the induced emf in a coil is directly proportional to the rate of change of flux linkages.…
  12. __________ is a substance of whose molecules consist of the same kind of atom.
  13. Which of the following electric quantities is vector in character?
  14. The force of attraction or repulsion between two magnetic poles is inversely proportional to the square…
  15. Flux linkages equals
  16. The reluctance of the magnetic circuit is ________ relative permeability of the material comprising…
  17. Who discovereda the relationship between magnetism and electricity that serves as the foundation for…
  18. The temperature coefficient of resistance of conductors is
  19. A magnetic flux of 2.5 x10^4 Wb through an area of 5 x10^4 square meters results in
  20. The unit of flux density is
  21. Define as that pole which when placed in air from a similar and equal pole repels it with a force of…
  22. As the magnetic intensity decreasesa the relative permeability of a magnetic material
  23. The magnetic field of a bar magnet most closely resembles the magnetic field of
  24. What is the SI unit of magnetic flux?
  25. Referred to as the specific reluctance of a material
  26. Whenever a conductor cuts magnetic fluxa an emf is induced in it. This is known as
  27. Defined as the number of lines per unit area through any substance in a plane at right angles to the…
  28. The contribution to the ionization in an ionization chamber by electrons liberated from t he walls.
  29. The force which set ups or tends to set up magnetic flux in a magnetic circuit
  30. The magnetic field around the conductor is determined by the