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Which of the following statements is TRUE?

A. Silicon dioxide is a good

B. The current carriers in conductors are valence electrons

C. For conductorsa the valence electron are strongly attracted to the nucleus

D. The valence electrons are located in the nucleus of an atom

You can do it
  1. An effect which is generally used in the gausameter to measure flux density.
  2. Electrons at the outer shell are called
  3. A germanium atom has an atomic weight of72. How many neutrons are there?
  4. Who discovered that a current-carrying conductor would move when placed in a magnetic field?
  5. A magnetizing force of 1000 AT/m will produce a flux density of __________ i
  6. One that has magnetic poles produced by internal atomic structure with no external current necessary
  7. How many electrons are needed in the valence orbit to give a material's stability?
  8. Gases whose particles are charged are known as
  9. The ratio of the total flux (flux in iron path) to the useful flux (flux in air gap)
  10. The property of magnetic materials of retaining magnetism after withdrawal of the magnetizing force…
  11. ______ is an electromagnet with its core in the form of a close magnetic ring.
  12. The magnitude of the induced emf in a coil is directly proportional to the rate of change of flux linkages.…
  13. A factor used to correct for the electrostatic forces of the more distant ions in an ionic solid.
  14. A magnetic material losses its ferromagnetic properties at a point called
  15. Why is it that the magnitude of magnetomotive force required for air gap is much greater than that required…
  16. Electronic current in a wire is the flow of ____________ electrons.
  17. A commercial alloy of aluminum nickela and iron with cobalta copper and titanium added to produce about…
  18. The emf induced in a coil due to the change of its own flux linked with it is called
  19. The space outside the magnet where its pole have a force of attraction or repulsion on a magnetic pole…
  20. If the number of valence electrons of an atom is more than 4a the substance is called
  21. What is the unit of magnetomotive force?
  22. The force acting on a unit n- pole placed at that point is called
  23. Electric field intensity is a ________.
  24. The force acting on a pole of 5 Wb is 25 N. What is the intensity of the magnetic field?
  25. The induced emf in a wire loop that is moved parallel to a uniform magnetic field is
  26. Who discovered the most important electrical effects which is the magnetic effect?
  27. The straight line passing through the two poles of magnet is called
  28. The core of a transformer heats up when its primary is fed from an ac source because of
  29. The magnetic energy stored in an inductor is ______ current.
  30. A law that states that the polarity of the induced voltage will oppose the change in magnetic flux causing…