Who discovereda the relationship between magnetism and electricity that serves as the foundation for the theory of electromagnetism?

A. Luigi Galvani

B. Hans Christian Oersted

C. Andre Ampere

D. Charles Coulomb

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  1. Who discovered superconductivity in 1911?
  2. Electric potential is a _______ quantity.
  3. The ratio of the total flux (flux in iron path) to the useful flux (flux in air gap)
  4. What is the maximum number of electrons that can be accommodated in the last orbit of an atom?
  5. A law relating between the magnetic and electric susceptibilities and the absolute temperatures which…
  6. Who demonstrated the theory of electromagnetic induction in 1831?
  7. The ratio of the permeability of material to the permiabiity of air or vacuum.
  8. One that has magnetic poles produced by internal atomic structure with no external current necessary
  9. Which of the following materials has permeability slightly less than that of free space?
  10. Hydrogen is an example of a _____ material.
  11. The temperature coefficient of resistance of eureka is
  12. Electromotive force in a circuit
  13. Electrons at the outer shell are called
  14. The force acting on a pole of 5 Wb is 25 N. What is the intensity of the magnetic field?
  15. Whenever a flux inking a coil or current changesa an emf is induced in it. This is known as
  16. The temperature coefficient of resistance of a conductor ______ with an increase in temperature.
  17. Core materials of a good relay have _________ hysteresis loop.
  18. Which of the following is a paramagnetic material?
  19. Which of the following is a paramagnetic material?
  20. What principle states that each electron in an atom must have a different set of quantum numbers?
  21. The force of attraction or repulsion between two magnetic poles is directly proportional to their strengths.
  22. How many neutrons does a copper atom have?
  23. What is the practical unit of electrical energy?
  24. The ability of a material to conduct magnetic flux through it.
  25. Defined as a closed path in which magnetic induction or flux flows
  26. What is the SI unit of specific resistance or resistivity?
  27. One weber of flux is equal to _______ magnetic lines of force.
  28. The electric flux density is a ________ quantity.
  29. The resistivity of a conductor ___________ with an increase in temperature.
  30. Electron is a Greek word for