Home

The emission of electrons from hot bodies is called

A. Radiation effect

B. Edison effect

C. Skin effect

D. Half effect

You can do it
  1. The physical motion resulting from the forces of magnetic fields is called
  2. The tiniest element of matter
  3. The force between two magnetic poles is _______ their pole strengths.
  4. States that the ratio of the thermal conductivity is proportional to the absolute temperature for all…
  5. A magnetic circuit carries a flux iin the iron part and a fluxgin the air gap. What is the leakage coefficient?
  6. The air space between poles of magnets
  7. Who discovered the most important electrical effects which is the magnetic effect?
  8. A law that states that the current in a thermionic diode varies directly with the three- halves power…
  9. The resistance of a material is ____________ its area of cross-section.
  10. Electric field intensity is measured in
  11. The evaporation of electrons from a heated surface is called
  12. A principle that states that only two electrons with different spins are allowed to exist in a given…
  13. A magnetizing force of 1000 AT/m will produce a flux density of __________ i
  14. There are how many compounds available in nature?
  15. What is another name for relative permittivity?
  16. Permeance of a magnetic circuit is _________ the cross-sectional area of the circuit.
  17. Which of the following is a paramagnetic material?
  18. Two similar polesa each 1Wba placed 1 m apart in air will experience a repulsive force of
  19. Defined as the flux density produced in it due to its own induced magnetism
  20. Another term for corona discharge.
  21. The ratio between the intensity of magnetization produced in a substance to the magnetizing force producing…
  22. The uncharged particles which have no effect on its atomic charge.
  23. Magnetic intensity is a
  24. A positively charged body has
  25. The electric potential at a point in air due to a charge is 21 V. If the air is replaced by a medium…
  26. As the magnetic intensity decreasesa the relative permeability of a magnetic material
  27. If a 20 V potential is applied across a relay coil with 50 turns having 1 ? of resistancea the total…
  28. Three charges of +5 Ca -6 C and +9 C are placed inside a sphere. What is the total flux passing through…
  29. The B-H curve for ________ is a straight line passing through the origin.
  30. Temporary magnets are commonly employed in