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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. Who demonstrated that there are magnetic effects around every current-carrying conductor and that current-carrying…
  2. Bonding of atoms that is due to the force of attraction between positive ions and a group of negative…
  3. The electric potential at a point in air due to a charge is 21 V. If the air is replaced by a medium…
  4. Another term for corona discharge.
  5. A magnetizing force of 1000 AT/m will produce a flux density of __________ i
  6. Which of the following materials has the least hysteresis loop area?
  7. A t/m is a unit of
  8. What is the SI unit of conductance?
  9. Who discovered that a current-carrying conductor would move when placed in a magnetic field?
  10. One weber of flux is equal to _______ magnetic lines of force.
  11. What revolves about the positive nucleus in a definite orbit?
  12. Which of the following has the least number of valence electrons?
  13. If the number of valence electrons of an atom is more than 4a the substance is called
  14. If the value of 0 a conductor is 1/234 per oCa then the value of 18is
  15. What is the value of the absolute permittivity of air?
  16. The hot resistance of an incandescent lamp is about _______ its cold resistance.
  17. What type of bond is formed when there exists some form of collective interactions between the (negatively…
  18. Referred to as the specific reluctance of a material
  19. Materials that have very high permeabilities (hundreds and even thousands times of that of free space)
  20. The ratio between the intensity of magnetization produced in a substance to the magnetizing force producing…
  21. Which of the following has the highest permeability?
  22. What determines the value of the temperature coefficient of resistance of a material?
  23. What is the unit of reluctance?
  24. If the magnetic material is located within a coil through which alternating current (60 Hz frequency)…
  25. The straight line passing through the two poles of magnet is called
  26. The electrons in the last orbit of an atom are called _______ electrons.
  27. Residual magnetism refers to the flux densitya which exists in the iron core when the magnetic field…
  28. If you hold the conductor with right hand so that the stretched thumb points in the direction of the…
  29. The phenomenon by which a subtracts pieces of iron
  30. The unit of flux density is