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Magnetic fields do not interact with

A. Moving permanent magnets

B. Stationary permanent magnets

C. Moving electric charges

D. Stationary electric charges

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  1. When the relative permeability of a material is slightly less than 1a it is called _____ material.
  2. Who discovered superconductivity in 1911?
  3. The unit of flux is _____ in cgs system.
  4. An alloy of 22 percent iron and 78 per cent nickel.
  5. A length of wire has a resistance of 10 ohms. What is the resistance of a wire of the same material…
  6. The magnetic flux through a coil changes. This results to the induced emf acting in a direction as to
  7. Magnetic effects of the earth as a huge magnet with north and south poles.
  8. Used to maintain strength of magnetic field
  9. Which of the following materials has the highest dielectric strength?
  10. A t/m is a unit of
  11. When the ferromagnetic substance is inserted in a current- carrying solenoida the magnetic field is
  12. If the number of valence electrons of an atom is less than 4a the substance is called
  13. When a current carrying conductor is placed in a magnetic fielda the maximum force will act on the conductor…
  14. Which element has four valence electrons?
  15. If on looking at any one end of a solenoid; the direction of current flow is found to be clockwise then…
  16. If the value of 25 a conductor is 1/255 per oCa then the value of 20is
  17. The ratio of the permeability of material to the permiabiity of air or vacuum.
  18. The B-H curve of ________ is not a straight line.
  19. Materials that have very high permeabilities (hundreds and even thousands times of that of free space)
  20. The temperature coefficient of resistance of conductors is
  21. The property of magnetic materials of retaining magnetism after withdrawal of the magnetizing force…
  22. All magnetic field originates from
  23. What is the SI unit of specific resistance or resistivity?
  24. Who discovered that a current-carrying conductor would move when placed in a magnetic field?
  25. One farad equals
  26. What is the SI unit of conductance?
  27. Electric lines of force leave or enter the charge surface at an angle of
  28. How much is the flux in Weber in the above problem?
  29. The magnitude of the induced emf in a coil is directly proportional to the rate of change of flux linkages.…
  30. The lagging effect between flux density of the material and the magne