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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. One of the solid structures in which the position of the atoms or ions are predetermined
  2. What is the main advantage of temporary magnets?
  3. The branch of Engineering which deals with the magnetic effect of electric current is known as
  4. Which element has four valence electrons?
  5. Defined as the flux density produced in it due to its own induced magnetism
  6. The resistance of a material is ____________ its area of cross-section.
  7. Refers to the magnetic lines
  8. The magnetic flux through a wire loop in a magnetic field does not d
  9. What is the SI unit of reluctance?
  10. An effect which is generally used in the gausameter to measure flux density.
  11. The ability of a material to conduct magnetic flux through it.
  12. If the number of valence electrons of an atom is less than 4a the substance is called
  13. Electric field intensity at a point is numerically equal to ________ at that point.
  14. Who discovered the most important electrical effects which is the magnetic effect?
  15. Electric potential is a _______ quantity.
  16. The permeability of permalloy is
  17. If on looking at any one end of a solenoid; the direction of current flow is found to be clockwise then…
  18. Which of the following materials has permeability slightly less than that of free space?
  19. Permeance of a magnetic circuit is _________ the cross-sectional area of the circuit.
  20. If a magnetic flux cuts across 200 turns at a rate of 2Wb/sa the induced voltage according to Faraday's…
  21. The current of electric circuit is analogous to which quantity of a m
  22. The straight line passing through the two poles of magnet is called
  23. Magnetic field intensity is a ________ quantity.
  24. Theory of ferromagnetic phenomena which assumes each atom is a permanent magnet which can turn freely…
  25. What is the SI unit of conductivity?
  26. One of the common application of an air- cored choke.
  27. The quantity 10^6 maxwells is equivalent to one
  28. A law relating between the magnetic and electric susceptibilities and the absolute temperatures which…
  29. Electric lines of force leave or enter the charge surface at an angle of
  30. The potential at a point due to a charge is 15 V. If the distance is times, the potential at the point…