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The net electrical charge in an isolated system remains constant. This is known as

A. Law of conservation of charge

B. Coulomb's first law

C. Coulomb's second law

D. Law of conservation of energy

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  1. Which of the following materials has the least hysteresis loop area?
  2. The evaporation of electrons from a heated surface is called
  3. If on looking at any one end of a solenoid; the direction of current flow is found to be clockwise then…
  4. At/m is a unit of
  5. An electron- volt (eV) is a unit of
  6. A commercial alloy of aluminum nickela and iron with cobalta copper and titanium added to produce about…
  7. The K shell or the first shell has how many permissible number of orbiting electrons?
  8. The reluctance of a magnetic circuit is not dependent on which of the following?
  9. A law relating between the magnetic and electric susceptibilities and the absolute temperatures which…
  10. The ability of a material to conduct magnetic flux through it.
  11. States that the ratio of the thermal conductivity is proportional to the absolute temperature for all…
  12. Permeance of a magnetic circuit is _________ the cross-sectional area of the circuit.
  13. What bond is formed when electrons in the outermost energy orbits of the atoms are shared between two…
  14. The direction of force o a current carrying conductor placed in a m found by
  15. Bonding of atoms that is due to the force of attraction between positive ions and a group of negative…
  16. The temperature coefficient of resistance of semiconductors is
  17. If the distance between two magnetic poles decreases by 2 timesa the force between them
  18. Electrons at the outer shell are called
  19. Electric field intensity is measured in
  20. If two similar charges 1 coulomb each are placed 1 m apart in aira then the force of repulsion is
  21. The quantity of magnetism retained by a magnetic material after withdrawal of the magnetizing force…
  22. A magnetic circuit carries a flux iin the iron part and a fluxgin the air gap. What is the leakage coefficient?
  23. The magnetic energy stored in an inductor is ______ current.
  24. The current of electric circuit is analogous to which quantity of a m
  25. A magnetic field is
  26. The emf produced in a wire by its motion across a magnetic field does not depend upon the
  27. What is the SI unit of conductivity?
  28. Lenz's law is the consequence of the law of conservation of
  29. The straight line passing through the two poles of magnet is called
  30. What is the SI unit of reluctance?