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. One electron volt (1 eV) is equivalent to _____ joules
  2. How many turns are needed to produce a magnetomotive force of 1000 A.t for a coil with 6 amperes?
  3. Who discovered that a current-carrying conductor would move when placed in a magnetic field?
  4. Lenz's law is the consequence of the law of conservation of
  5. If the number of valence electrons of an atom is more than 4a the substance is called
  6. What is another name for relative permittivity?
  7. A magnetic flux of 2.5 x10^4 Wb through an area of 5 x10^4 square meters results in
  8. A magnetic circuit carries a flux iin the iron part and a fluxgin the air gap. What is the leakage coefficient?
  9. Back emf refers to the
  10. A current if flowing east along a power line. If the earth's field is neglecteda the direction of the…
  11. The electric field intensity between the parallel plate air capacitor is 20 N/C. If an insulating slab…
  12. Materials whose permeabilities are slightly greater than that of free space
  13. Hipernik is an alloy containing __________ iron and __________ nickel.
  14. Which of the following has the least number of valence electrons?
  15. Flux density is measured in
  16. Defined as the ratio of the volume occupied by the atoms or ions in a unit cell divided by the volume…
  17. Who demonstrated that there are magnetic effects around every current-carrying conductor and that current-carrying…
  18. The K shell or the first shell has how many permissible number of orbiting electrons?
  19. What determines the value of the temperature coefficient of resistance of a material?
  20. The unit of electrical energy is
  21. If the value of 25 a conductor is 1/255 per oCa then the value of 20is
  22. What is the relative permittivity of air?
  23. Magnetic field intensity is a ________ quantity.
  24. The force between two charges placed a given distance apart ______ as the relative permittivity of the…
  25. The current of electric circuit is analogous to which quantity of a m
  26. Permeance is analogous to
  27. Permeance of a magnetic circuit is _________ the cross-sectional area of the circuit.
  28. A germanium atom has an atomic weight of72. How many neutrons are there?
  29. A negatively charge body has
  30. The unit of flux density is