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. If the distance between two magnetic poles decreases by 2 timesa the force between them
  2. What is the diameter of an atom?
  3. What is the SI unit of conductance?
  4. When a conductor is stationary and the magnetic field is moving or changing the emf induced is called
  5. __________ is a substance of whose molecules consist of the same kind of atom.
  6. Electric field intensity at a point due to a given charge ______ if the relative permittivity of the…
  7. An alloy of 40 percent iron and 60 percent nickel.
  8. One of the common application of an air- cored choke.
  9. At/m is a unit of
  10. The ratio of the total flux (flux in iron path) to the useful flux (flux in air gap)
  11. The phenomenon by which a subtracts pieces of iron
  12. One electron volt (1 eV) is equivalent to _____ joules
  13. How many turns are needed to produce a magnetomotive force of 1000 A.t for a coil with 6 amperes?
  14. What is another name for relative permittivity?
  15. What is the SI unit of conductivity?
  16. Materials that have very high permeabilities (hundreds and even thousands times of that of free space)
  17. Who developed the electromagnetic theory of light in 1862?
  18. Why is it that the magnitude of magnetomotive force required for air gap is much greater than that required…
  19. A factor used to correct for the electrostatic forces of the more distant ions in an ionic solid.
  20. A t/m is a unit of
  21. The magnitude of the induced emf in a coil is directly proportional to the rate of change of flux linkages.…
  22. What solid has no defined crystal structure except perhaps in the arrangement of the nearest neighboring…
  23. A principle that states that only two electrons with different spins are allowed to exist in a given…
  24. The phenomenon that when an electric current passes through an anisotropic crystala there is an absorption…
  25. The electric potential across part AB of a circuit is 5 V; point A being at higher potential. If a charge…
  26. A positively charged body has
  27. The force between two magnetic poles is _____ the relative permeability of the medium.
  28. The air space between poles of magnets
  29. Refers to the magnetic lines
  30. Small voltages generated by a conductor with current in an external magnetic field.