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Who developed the electromagnetic theory of light in 1862?

A. Heinrich Rudolf Hertz

B. Wilhelm Rontgen

C. James Clerk Maxwell

D. Andre Ampere

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  1. The physical motion resulting from the forces of magnetic fields is called
  2. What is the typical saturation flux density for most magnetic materials?
  3. If the solenoid is gripped by the right hand with the fingers pointing the direction of current flowa…
  4. States that the ratio of the thermal conductivity is proportional to the absolute temperature for all…
  5. Cobalt is an example of a ______ material.
  6. The core of a magnetic equipment uses a magnetic material with
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    A magnetic pole produces 5000 field lines. How much is the flux in webers? A. 50 10^-6
  8. The property of a material which opposes the creation of magnetic flux in it
  9. The magnetic field inside a solenoid
  10. What is used as the dielectric material in high voltage transformers?
  11. A factor used to correct for the electrostatic forces of the more distant ions in an ionic solid.
  12. Steel is hard to magnetize because of its
  13. What is the practical unit of electrical energy?
  14. Which of the following magnetic materials can be easily magnetized in both direction?
  15. A germanium atom has an atomic weight of72. How many neutrons are there?
  16. One farad equals
  17. Permanent magnets can be found in
  18. One weber of flux is equal to _______ magnetic lines of force.
  19. A law relating between the magnetic and electric susceptibilities and the absolute temperatures which…
  20. A permanent magnet does not exert a force on
  21. Bonding of atoms that is due to the force of attraction between positive ions and a group of negative…
  22. The reluctance of the magnetic circuit is ________ relative permeability of the material comprising…
  23. The relation between absolute permittivity of air ( 0)a absolute p and velocity of light (c) is given…
  24. A substance that attracts pieces iron
  25. What determines the value of the temperature coefficient of resistance of a material?
  26. The current of electric circuit is analogous to which quantity of a m
  27. If the magnetic material is located within a coil through which alternating current (60 Hz frequency)…
  28. A law establishing the fact that the algebraic su of the rises and drops of the mmf around a closed…
  29. Used to maintain strength of magnetic field
  30. What is the diameter of an atom?