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The property of a material which opposes the creation of magnetic flux in it

A. Resistance

B. Reluctance

C. Permeance

D. Conductance

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  1. The B-H curve for ________ is a straight line passing through the origin.
  2. A magnetic flux of 2.5 x10^4 Wb through an area of 5 x10^4 square meters results in
  3. The force of attraction or repulsion between two magnetic poles is directly proportional to their strengths.
  4. If the number of valence electrons of an atom is exactly 4a then the substance is called
  5. A magnetizing force of 1000 AT/m will produce a flux density of __________ i
  6. __________ is a substance of whose molecules consist of the same kind of atom.
  7. Ohm's law can be used only to a _____ circuit or component.
  8. The energy stored in an electrostatic field or electromagnetic field is called
  9. Electric potential is a _______ quantity.
  10. Which of the following is a diamagnetic material?
  11. An alloy of 22 percent iron and 78 per cent nickel.
  12. The emf induced in a coil due to the change of its own flux linked with it is called
  13. All magnetic field originates from
  14. What principle states that each electron in an atom must have a different set of quantum numbers?
  15. Ohm's law cannot be applied to which material?
  16. Who developed the electromagnetic theory of light in 1862?
  17. The permeability of a material having a flux density of 5 Wb/m^2 is 10^-5 H/m. What is the value of…
  18. The temperature coefficient of resistance of a conductor ______ with an increase in temperature.
  19. What is the typical saturation flux density for most magnetic materials?
  20. Hysteresis is a phenomenon of _________ in a magnetic circuit.
  21. What is the maximum number of electrons that can be accommodated in the last orbit of an atom?
  22. If the value of 25 a conductor is 1/255 per oCa then the value of 20is
  23. States that the ratio of the thermal conductivity is proportional to the absolute temperature for all…
  24. The force which set ups or tends to set up magnetic flux in a magnetic circuit
  25. A group of magnetically aligned atoms is called
  26. Lenz's law is the consequence of the law of conservation of
  27. The unit of electrical energy is
  28. If you hold the conductor with right hand so that the stretched thumb points in the direction of the…
  29. Electrons at the outer shell are called
  30. A principle that states that only two electrons with different spins are allowed to exist in a given…