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

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  1. What type of bond is formed when there exists some form of collective interactions between the (negatively…
  2. Germanium atom has ______ protons and ______ electrons.
  3. The resistivity of a conductor ___________ with an increase in temperature.
  4. Hipernik is an alloy containing __________ iron and __________ nickel.
  5. Which of the following materials has the least hysteresis loop area?
  6. If the length and area of cross-section of a wire are doubleda then its resistance
  7. One oersted (Oe) is equivalent to _____ Gb/cm.
  8. An alloy of 40 percent iron and 60 percent nickel.
  9. The ability of a mechanically stressed ferromagnetic wire to recognize rapid switching of magnetization…
  10. __________ is a substance of whose molecules consist of the same kind of atom.
  11. If the distance between two magnetic poles decreases by 2 timesa the force between them
  12. How many turns are needed to produce a magnetomotive force of 1000 A.t for a coil with 6 amperes?
  13. The temperature coefficient of resistance of eureka is
  14. The electrons in the last orbit of an atom are called _______ electrons.
  15. The potential at a point due to a charge is 15 V. If the distance is times, the potential at the point…
  16. ______ is an electromagnet with its core in the form of a close magnetic ring.
  17. Permeance of a magnetic circuit is _________ the cross-sectional area of the circuit.
  18. How is mutual inductance between two coils decreased?
  19. If the right handed bottle-opener cork screw is assumed to be along the conductor so as to advance in…
  20. What is the SI unit of magnetic flux?
  21. A magnetic circuit carries a flux iin the iron part and a fluxgin the air gap. What is the leakage coefficient?
  22. The phenomenon by which a magnetic substance becomes a magnet when it is place near a magnet
  23. What is the typical saturation flux density for most magnetic materials?
  24. All magnetic field originates from
  25. The phenomenon by which a subtracts pieces of iron
  26. The B-H curve of ________ is not a straight line.
  27. The induced emf in a wire loop that is moved parallel to a uniform magnetic field is
  28. Whenever a flux inking a coil or current changesa an emf is induced in it. This is known as
  29. A test charge means a charge of
  30. The ratio of the total flux (flux in iron path) to the useful flux (flux in air gap)