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Whenever a flux inking a coil or current changesa an emf is induced in it. This is known as

A. Joule's Law

B. Coulomb's Law

C. Faraday's first law of electromagnetic induction

D. Faraday's second law of electromagnetic induction

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  1. The temperature coefficient of resistance of conductors is
  2. There are how many compounds available in nature?
  3. What is the practical unit of electrical energy?
  4. One coulomb of charge consists of ________ electrons.
  5. Back emf refers to the
  6. What bond is formed when one or more electrons in the outermost energy orbit of an atom are transferred…
  7. What is the other name for dielectric strength?
  8. The energy stored in an electrostatic field or electromagnetic field is called
  9. Which of the following materials has permeability slightly less than that of free space?
  10. Used to maintain strength of magnetic field
  11. If the value of 0 a conductor is 1/234 per oCa then the value of 18is
  12. If the value of 25 of a conductor is 1/230 per oCa then the value of 0is
  13. Which of the following magnetic materials can be easily magnetized in both direction?
  14. What is used as the insulating material or dielectric in an electric ion
  15. The idea of preventing one component from affecting another through their common electric and magnetic…
  16. The unit of electrical energy is
  17. Which of the following is a paramagnetic material?
  18. Which of the following is a vector quantity?
  19. The magnetic potential in a magnetic circuit can be measured in terms of
  20. What is the relative permittivity of air?
  21. Electric field intensity is measured in
  22. The quantity of magnetism retained by a magnetic material after withdrawal of the magnetizing force…
  23. Electric field intensity at a point is numerically equal to ________ at that point.
  24. If the distance between two magnetic poles decreases by 2 timesa the force between them
  25. The force between two magnetic poles varies with the distance between them. The variation is ______…
  26. A t/m is a unit of
  27. What is the SI unit of reluctance?
  28. Refers to the non- metallic materials that have the ferromagnetic properties of iron.
  29. Who discovered that a current-carrying conductor would move when placed in a magnetic field?
  30. Flux density is measured in