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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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  3. A 6- V battery is connected across a solenoid of 100 turns having a resistance of 2 ?a Calculate the…
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  10. If a magnetic flux cuts across 200 turns at a rate of 2Wb/sa the induced voltage according to Faraday's…
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  14. What is used as the dielectric material in high voltage transformers?
  15. The magnetic flux through a coil changes. This results to the induced emf acting in a direction as to
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  17. The electric potential at a point in air due to a charge is 21 V. If the air is replaced by a medium…
  18. A law stating that the magnetic susceptibilities of most paramagnetic substances are inversely proportional…
  19. Mmf in a magnetic circuit corresponds to _____ in an electric circuit
  20. The mass of proton is __________ the mass of an electron.
  21. Permeability means
  22. There are how many compounds available in nature?
  23. The magnetic field inside a solenoid
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  25. Who demonstrated the theory of electromagnetic induction in 1831?
  26. Why is it that the magnitude of magnetomotive force required for air gap is much greater than that required…
  27. The force between two magnetic poles varies with the distance between them. The variation is ______…
  28. Electric field intensity at a point due to a given charge ______ if the relative permittivity of the…
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