The unit of electrical energy is

A. Joule

B. Watt- second

C. Kilowatt hour

D. All of these

You can do it
  1. The temperature coefficient of resistance of insulators is
  2. Flux linkages equals
  3. One of the common application of an air- cored choke.
  4. Which of the following is a paramagnetic material?
  5. The B-H curve of ________ is not a straight line.
  6. Who discovered that a current-carrying conductor would move when placed in a magnetic field?
  7. How many electrons are needed in the valence orbit to give a material's stability?
  8. A law that states that the polarity of the induced voltage will oppose the change in magnetic flux causing…
  9. The phenomenon by which a subtracts pieces of iron
  10. The diameter of a hydrogen atom is approximately ______ cm.
  11. The force of attraction or repulsion between two magnetic poles is directly proportional to their strengths.
  12. Paramagnetic substance has a relative permeability of
  13. Electromotive force in a circuit
  14. The conduction of electricity across the surface of a dielectric is called
  15. An atom or a group of atoms that carries a net electric charge.
  16. A magnetizing force of 1000 AT/m will produce a flux density of __________ i
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    A magnetic pole produces 5000 field lines. How much is the flux in webers? A. 50 10^-6
  18. Magnetic effects of the earth as a huge magnet with north and south poles.
  19. The force between two magnetic poles varies with the distance between them. The variation is ______…
  20. Core materials of a good relay have _________ hysteresis loop.
  21. The tiniest element of matter
  22. Bonding of atoms that is due to the force of attraction between positive ions and a group of negative…
  23. Which of the following is a vector quantity?
  24. Who demonstrated that there are magnetic effects around every current-carrying conductor and that current-carrying…
  25. The temperature coefficient of resistance of conductors is
  26. The emf induced in a coil due to the change of its own flux linked with it is called
  27. If the length and area of cross-section of a wire are doubleda then its resistance
  28. All matters (gasa liquid and solid) are composed of
  29. The emf induced in a coil due to the changing current of another neighboring coil is called
  30. One electron volt (1 eV) is equivalent to _____ joules