States that the ratio of the thermal conductivity is proportional to the absolute temperature for all metals.

A. Wien's displacement law

B. Hartleys law

C. Hall's law

D. Wiedemann Franz law

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  1. The force between two magnetic poles is _______ their pole strengths.
  2. Steel is hard to magnetize because of its
  3. An electron- volt (eV) is a unit of
  4. When the relative permeability of a material is slightly less than 1a it is called _____ material.
  5. Electric field intensity at a point is numerically equal to ________ at that point.
  6. Whenever a flux inking a coil or current changesa an emf is induced in it. This is known as
  7. The magnetic field of a bar magnet most closely resembles the magnetic field of
  8. Refers to the magnetic lines
  9. The emf induced in a coil due to the change of its own flux linked with it is called
  10. ______ is an electromagnet with its core in the form of a close magnetic ring.
  11. A negative ion results when an atom gains an additional
  12. What is the SI unit of reluctance?
  13. What is the main advantage of temporary magnets?
  14. If the number of valence electrons of an atom is less than 4a the substance is called
  15. The unit of electrical energy is
  16. Who discovereda the relationship between magnetism and electricity that serves as the foundation for…
  17. What is the reluctance of a magnetic path having a length of 2x 10^-3m and crosssectional area of 2.5…
  18. Which of the following has the least number of valence electrons?
  19. A 200-watt lamp working for 24 hours will consume approximately _____ units.
  20. A positively charged body has
  21. A law that states that the polarity of the induced voltage will oppose the change in magnetic flux causing…
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    When the current flowsa the magnetic field . conductor is in what direction?
  23. The physical motion resulting from the forces of magnetic fields is called
  24. Paramagnetic substance has a relative permeability of
  25. Materials that have very high permeabilities (hundreds and even thousands times of that of free space)
  26. The force of attraction or repulsion between two magnetic poles is directly proportional to their strengths.
  27. A principle that states that only two electrons with different spins are allowed to exist in a given…
  28. Mmf in a magnetic circuit corresponds to _____ in an electric circuit
  29. What bond is formed when one or more electrons in the outermost energy orbit of an atom are transferred…
  30. A t/m is a unit of