The contribution to the ionization in an ionization chamber by electrons liberated from t he walls.

A. Skin effect

B. Walt effect

C. Hall effect

D. Edison effect

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  1. The customary energy unit in atomic and nuclear physics is
  2. An alloy of 22 percent iron and 78 per cent nickel.
  3. Hysteresis is a phenomenon of _________ in a magnetic circuit.
  4. If the number of valence electrons of an atom is more than 4a the substance is called
  5. Which of the following is a diamagnetic material?
  6. When a wire loop is rotated in a magnetic field the direction of the induced emf changes one in every…
  7. Electromotive force in a circuit
  8. Who developed the electromagnetic theory of light in 1862?
  9. When the relative permeability of a material is slightly less than 1a it is called _____ material.
  10. The permeability of permalloy is
  11. Formed when there exist distant electronic interactions between (opposite) charges present in the neighboring…
  12. How many turns are needed to produce a magnetomotive force of 1000 A.t for a coil with 6 amperes?
  13. If the number of valence electrons of an atom is exactly 4a then the substance is called
  14. The magnetic field of a magnetized iron bar when strongly heated
  15. The unit of flux is _____ in cgs system.
  16. A one cubic cm of copper has how many free electrons at room temperature?
  17. What bond is formed when electrons in the outermost energy orbits of the atoms are shared between two…
  18. Defined as the number of lines per unit area through any substance in a plane at right angles to the…
  19. At/m is a unit of
  20. A substance that attracts pieces iron
  21. The force acting on a unit n- pole placed at that point is called
  22. The permittivity of a material is given by one of the following formulas.
  23. The quantity of magnetism retained by a magnetic material after withdrawal of the magnetizing force…
  24. Used to maintain strength of magnetic field
  25. The ability of a mechanically stressed ferromagnetic wire to recognize rapid switching of magnetization…
  26. Calculate the flux density that will be produced by the field intensity of 2000 a. t/m for a permeability…
  27. What is the measure of the density and sign of the electric charge at a point relative to that at some…
  28. The property of a material which opposes the creation of magnetic flux in it
  29. A magnetic circuit carries a flux iin the iron part and a fluxgin the air gap. What is the leakage coefficient?
  30. An effect which is generally used in the gausameter to measure flux density.