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Defined as a closed path in which magnetic induction or flux flows

A. Electric circuit

B. Magnetic circuit

C. Electronic circuit

D. Electromagnetic circuit

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  1. In electro-mechanical conversion devices like generators and motors the reason why a small air gap is…
  2. An electron- volt (eV) is a unit of
  3. If the value of 25 a conductor is 1/255 per oCa then the value of 20is
  4. The B-H curve of ________ is not a straight line.
  5. The phenomenon that when an electric current passes through an anisotropic crystala there is an absorption…
  6. The force between two magnetic poles varies with the distance between them. The variation is ______…
  7. A positively charged body has
  8. Used to maintain strength of magnetic field
  9. All matters (gasa liquid and solid) are composed of
  10. The magnetic field around the conductor is determined by the
  11. If a magnetic flux cuts across 200 turns at a rate of 2Wb/sa the induced voltage according to Faraday's…
  12. An atom or a group of atoms that carries a net electric charge.
  13. Lenz' law states that the direction of the induced emf and hence current
  14. Materials whose permeabilities are slightly greater than that of free space
  15. Which of the following materials has the least hysteresis loop area?
  16. The ratio between the intensity of magnetization produced in a substance to the magnetizing force producing…
  17. The force of attraction or repulsion between two magnetic poles is inversely proportional to the square…
  18. The temperature coefficient of resistance of a conductor ______ with an increase in temperature.
  19. Which of the following is a natural magnet?
  20. Ohm's law cannot be applied to which material?
  21. When the ferromagnetic substance is inserted in a current- carrying solenoida the magnetic field is
  22. The magnetic flux through a wire loop in a magnetic field does not d
  23. Temporary magnets are commonly employed in
  24. Back emf refers to the
  25. Who demonstrated the theory of electromagnetic induction in 1831?
  26. The relation between absolute permittivity of air ( 0)a absolute p and velocity of light (c) is given…
  27. Hipernik is an alloy containing __________ iron and __________ nickel.
  28. What is the typical saturation flux density for most magnetic materials?
  29. Two similar polesa each 1Wba placed 1 m apart in air will experience a repulsive force of
  30. A law relating between the magnetic and electric susceptibilities and the absolute temperatures which…