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Magnetic effects of the earth as a huge magnet with north and south poles.

A. Diamagnetic

B. Ferromagnetic

C. Terrestrial magnetism

D. Terrestrial ferromagnetism

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  1. Referred to as the specific reluctance of a material
  2. The B-H curve for ________ is a straight line passing through the origin.
  3. Which of the following is a natural magnet?
  4. What is the SI unit of magnetic flux?
  5. If two similar charges 1 coulomb each are placed 1 m apart in aira then the force of repulsion is
  6. Lenz' law states that the direction of the induced emf and hence current
  7. The phenomenon that when an electric current passes through an anisotropic crystala there is an absorption…
  8. The ratio of the total flux (flux in iron path) to the useful flux (flux in air gap)
  9. The simplest type of atom to exist is the ______ atom.
  10. Which of the following is a paramagnetic material?
  11. This paper does not exhibit electricity because it contains the same number of
  12. Who demonstrated that there are magnetic effects around every current-carrying conductor and that current-carrying…
  13. Who discovered that a current-carrying conductor would move when placed in a magnetic field?
  14. The air space between poles of magnets
  15. The temperature coefficient of resistance of a conductor ______ with an increase in temperature.
  16. The unit of flux is _____ in cgs system.
  17. There are how many compounds available in nature?
  18. A length of wire has a resistance of 10 ohms. What is the resistance of a wire of the same material…
  19. An atom or a group of atoms that carries a net electric charge.
  20. What is the unit of magnetomotive force?
  21. A t/m is a unit of
  22. One oersted (Oe) is equivalent to _____ Gb/cm.
  23. When the relative permeability of a material is slightly less than 1a it is called _____ material.
  24. What bond is formed when one or more electrons in the outermost energy orbit of an atom are transferred…
  25. Flux linkages equals
  26. The magnetic field of a bar magnet most closely resembles the magnetic field of
  27. An alloy of 22 percent iron and 78 per cent nickel.
  28. A law establishing the fact that the algebraic su of the rises and drops of the mmf around a closed…
  29. What is the practical unit of electrical energy?
  30. Electrons at the outer shell are called