How many electrons are needed in the valence orbit to give a material's stability?



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  1. When a current carrying conductor is placed in a magnetic fielda the maximum force will act on the conductor…
  2. The process by which an emf and hence current is generated or induced in a conductor when there is a…
  3. Permeance is analogous to
  4. Electric lines of force leave or enter the charge surface at an angle of
  5. One that has magnetic poles produced by internal atomic structure with no external current necessary
  6. If two similar charges 1 coulomb each are placed 1 m apart in aira then the force of repulsion is
  7. A principle that states that only two electrons with different spins are allowed to exist in a given…
  8. A germanium atom has an atomic weight of72. How many neutrons are there?
  9. The property of magnetic materials of retaining magnetism after withdrawal of the magnetizing force…
  10. The unit of flux is _____ in cgs system.
  11. Who discovered superconductivity in 1911?
  12. Who demonstrated that there are magnetic effects around every current-carrying conductor and that current-carrying…
  13. Which of the following is a diamagnetic material?
  14. Hysteresis loss can be reduced by one of the following.
  15. If the number of valence electrons of an atom is exactly 4a then the substance is called
  16. Refers to the non- metallic materials that have the ferromagnetic properties of iron.
  17. The electrons in the last orbit of an atom are called _______ electrons.
  18. The magnetic flux through a coil changes. This results to the induced emf acting in a direction as to
  19. One ampere- turn is equivalent to _____ gilberts
  20. The unit of flux density is
  21. What is the relative permittivity of air?
  22. The reluctance of a magnetic circuit varies with
  23. As the magnetic intensity decreasesa the relative permeability of a magnetic material
  24. A magnetic circuit carries a flux iin the iron part and a fluxgin the air gap. What is the leakage coefficient?
  25. A current if flowing east along a power line. If the earth's field is neglecteda the direction of the…
  26. Defined as the ratio of the volume occupied by the atoms or ions in a unit cell divided by the volume…
  27. The ability of a mechanically stressed ferromagnetic wire to recognize rapid switching of magnetization…
  28. The electric potential at a point in air due to a charge is 21 V. If the air is replaced by a medium…
  29. The magnetic energy stored in an inductor is ______ current.
  30. What is the SI unit of conductance?