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What type of bond is formed when there exists some form of collective interactions between the (negatively charged) electrons and (positively charged) nuclei in a solid?

A. Ionic

B. Covalent

C. Metallic

D. Van der Waals

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  1. If a magnetic flux cuts across 200 turns at a rate of 2Wb/sa the induced voltage according to Faraday's…
  2. The ratio of the total flux (flux in iron path) to the useful flux (flux in air gap)
  3. What is the SI unit of magnetic flux?
  4. The permeability of a material having a flux density of 5 Wb/m^2 is 10^-5 H/m. What is the value of…
  5. The reluctance of a magnetic circuit is not dependent on which of the following?
  6. Electric field intensity at a point is numerically equal to ________ at that point.
  7. The magnetic potential in a magnetic circuit can be measured in terms of
  8. A 200-watt lamp working for 24 hours will consume approximately _____ units.
  9. The quantity of magnetism retained by a magnetic material after withdrawal of the magnetizing force…
  10. Hipernik is an alloy containing __________ iron and __________ nickel.
  11. An effect which is generally used in the gausameter to measure flux density.
  12. Electric field intensity at a point due to a given charge ______ if the relative permittivity of the…
  13. The force of attraction or repulsion between two magnetic poles is directly proportional to their strengths.
  14. What is the SI unit of specific resistance or resistivity?
  15. The current of electric circuit is analogous to which quantity of a m
  16. Permeability means
  17. Which of the following magnetic materials can be easily magnetized in both direction?
  18. The magnetic field around the conductor is determined by the
  19. The temperature coefficient of resistance of insulators is
  20. One of the common application of an air- cored choke.
  21. Whenever a conductor cuts magnetic fluxa an emf is induced in it. This is known as
  22. Materials whose permeabilities are slightly greater than that of free space
  23. The emf induced in a coil due to the change of its own flux linked with it is called
  24. Referred to as the specific reluctance of a material
  25. A good conductor has how many valence electrons?
  26. If the length and area of cross-section of a wire are doubleda then its resistance
  27. Electric lines of force leave or enter the charge surface at an angle of
  28. The direction of force o a current carrying conductor placed in a m found by
  29. Electromotive force in a circuit
  30. What is the practical unit of electrical energy?