The magnetic energy stored in an inductor is ______ current.

A. Directly proportional to

B. Inversely proportional to

C. Directly proportional to the square of

D. Inversely proportional to the square of

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  1. Core materials of a good relay have _________ hysteresis loop.
  2. The total number of magnetic lines of force in a magnetic field is called
  3. The hot resistance of an incandescent lamp is about _______ its cold resistance.
  4. If the number of valence electrons of an atom is exactly 4a then the substance is called
  5. It is the reciprocal of reluctance and implies the case of readiness with which magnetic flux is developed.
  6. Permeance is analogous to
  7. When the relative permeability of a material is slightly less than 1a it is called _____ material.
  8. Which of the following is a paramagnetic material?
  9. When a wire loop is rotated in a magnetic field the direction of the induced emf changes one in every…
  10. Permanent magnets can be found in
  11. The energy stored in an electrostatic field or electromagnetic field is called
  12. A test charge means a charge of
  13. Formed when there exist distant electronic interactions between (opposite) charges present in the neighboring…
  14. The greater percentage of materials is _________.
  15. What is the measure of the density and sign of the electric charge at a point relative to that at some…
  16. The force acting on a unit n- pole placed at that point is called
  17. Hysteresis is a phenomenon of _________ in a magnetic circuit.
  18. A theorem which states that an electric current flowing in a circuit produces a magnetic field at external…
  19. If a 20 V potential is applied across a relay coil with 50 turns having 1 ? of resistancea the total…
  20. A good conductor has how many valence electrons?
  21. __________ is a substance of whose molecules consist of the same kind of atom.
  22. If the number of valence electrons of an atom is less than 4a the substance is called
  23. All matters (gasa liquid and solid) are composed of
  24. The branch of Engineering which deals with the magnetic effect of electric current is known as
  25. A substance that attracts pieces iron
  26. Electrons at the outer shell are called
  27. What is the usual value of leakage coefficient for electrical machines?
  28. The reluctance of a magnetic circuit varies with
  29. The unit of flux density is
  30. Who demonstrated that there are magnetic effects around every current-carrying conductor and that current-carrying…