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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. If the value of 25 a conductor is 1/255 per oCa then the value of 20is
  2. Defined as the flux density produced in it due to its own induced magnetism
  3. A magnetic field is
  4. A law stating that the magnetic susceptibilities of most paramagnetic substances are inversely proportional…
  5. A factor used to correct for the electrostatic forces of the more distant ions in an ionic solid.
  6. A law establishing the fact that the algebraic su of the rises and drops of the mmf around a closed…
  7. At/m is a unit of
  8. Who demonstrated the theory of electromagnetic induction in 1831?
  9. The force between two magnetic poles varies with the distance between them. The variation is ______…
  10. The simplest type of atom to exist is the ______ atom.
  11. What is the SI unit of conductance?
  12. Temporary magnets are commonly employed in
  13. In electro-mechanical conversion devices like generators and motors the reason why a small air gap is…
  14. A 6- V battery is connected across a solenoid of 100 turns having a resistance of 2 ?a Calculate the…
  15. The process by which an emf and hence current is generated or induced in a conductor when there is a…
  16. Hysteresis refers to the ______ between flux density of the material and the magnetizing force applied.
  17. The force of attraction or repulsion between two magnetic poles is inversely proportional to the square…
  18. A group of magnetically aligned atoms is called
  19. The magnetic field around the conductor is determined by the
  20. A magnetic flux of 2.5 x10^4 Wb through an area of 5 x10^4 square meters results in
  21. The electric flux density is a ________ quantity.
  22. The reluctance of the magnetic circuit is ________ relative permeability of the material comprising…
  23. Electrons at the outer shell are called
  24. What is the cgs unit of magnetomotive force?
  25. The magnetic flux through a coil changes. This results to the induced emf acting in a direction as to
  26. A law that states that the polarity of the induced voltage will oppose the change in magnetic flux causing…
  27. __________ is a substance of whose molecules consist of the same kind of atom.
  28. All matters (gasa liquid and solid) are composed of
  29. If the number of valence electrons of an atom is less than 4a the substance is called
  30. A law that states that the current in a thermionic diode varies directly with the three- halves power…