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Who demonstrated the theory of electromagnetic induction in 1831?

A. Michael Faraday

B. Andre Ampere

C. James Clerk Maxwell

D. Charles Coulomb

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  1. What determines the atomic number of an element?
  2. A t/m is a unit of
  3. The ability of a material to conduct magnetic flux through it.
  4. The reluctance of a magnetic circuit varies with
  5. The property of magnetic materials of retaining magnetism after withdrawal of the magnetizing force…
  6. The emf induced in a coil due to the changing current of another neighboring coil is called
  7. One of the common application of an air- cored choke.
  8. Electromotive force in a circuit
  9. The process by which an emf and hence current is generated or induced in a conductor when there is a…
  10. Which of the following statements is TRUE?
  11. What determines the value of the temperature coefficient of resistance of a material?
  12. A magnetizing force of 1000 AT/m will produce a flux density of __________ i
  13. One that has magnetic poles produced by internal atomic structure with no external current necessary
  14. The quantity 10^6 maxwells is equivalent to one
  15. One electron volt (1 eV) is equivalent to _____ joules
  16. The magnetic materials should have a large hysteresis loss for one of the following applications.
  17. Magnetic fields do not interact with
  18. Formed when there exist distant electronic interactions between (opposite) charges present in the neighboring…
  19. The core of a magnetic equipment uses a magnetic material with
  20. What is the SI unit of conductance?
  21. Who discovered that a current-carrying conductor would move when placed in a magnetic field?
  22. Why is it that the magnitude of magnetomotive force required for air gap is much greater than that required…
  23. A one cubic cm of copper has how many free electrons at room temperature?
  24. When the relative permeability of a material is slightly less than 1a it is called _____ material.
  25. The force between two magnetic poles is _______ their pole strengths.
  26. A law stating that the magnetic susceptibilities of most paramagnetic substances are inversely proportional…
  27. Defined as the ratio of the volume occupied by the atoms or ions in a unit cell divided by the volume…
  28. Refers to the magnetic lines
  29. Who discovered superconductivity in 1911?
  30. What is the value of the absolute permittivity of air?