Temporary magnets are commonly employed in

A. electric instruments

B. motors

C. moving coils loudspeakers

D. magnetos

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. What is the cgs unit of magnetomotive force?
  2. The force which set ups or tends to set up magnetic flux in a magnetic circuit
  3. What is the SI unit of magnetic flux?
  4. Who demonstrated the theory of electromagnetic induction in 1831?
  5. What is the main advantage of temporary magnets?
  6. The energy stored in an electrostatic field or electromagnetic field is called
  7. Temporary magnets are commonly employed in
  8. Which of the following is a paramagnetic material?
  9. One of the solid structures in which the position of the atoms or ions are predetermined
  10. Which of the following is used by permanent magnets as the magnetic material?
  11. Flux density is measured in
  12. One coulomb of charge consists of ________ electrons.
  13. The magnetic field of a magnetized iron bar when strongly heated
  14. What is the relative permittivity of air?
  15. The air space between poles of magnets
  16. A magnetic pole produces 5000 field lines. How much is the flux in webers? A. 50 × 10^-6
  17. It is the reciprocal of reluctance and implies the case of readiness with which magnetic flux is developed.
  18. Under ordinary conditionsa a body is considered
  19. The property of magnetic materials of retaining magnetism after withdrawal of the magnetizing force…
  20. A 200-watt lamp working for 24 hours will consume approximately _____ units.
  21. A negative ion results when an atom gains an additional
  22. Calculate the flux density that will be produced by the field intensity of 2000 a. t/m for a permeability…
  23. A theorem which states that an electric current flowing in a circuit produces a magnetic field at external…
  24. What is the typical saturation flux density for most magnetic materials?
  25. If the right handed bottle-opener cork screw is assumed to be along the conductor so as to advance in…
  26. If you hold the conductor with right hand so that the stretched thumb points in the direction of the…
  27. Back emf refers to the
  28. A t/m is a unit of
  29. Hysteresis loss can be reduced by one of the following.
  30. What is the measure of the density and sign of the electric charge at a point relative to that at some…