A 6- V battery is connected across a solenoid of 100 turns having a resistance of 2 ?a Calculate the number of ampere turns?



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    A magnetic pole produces 5000 field lines. How much is the flux in webers? A. 50 10^-6
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  11. What is the practical unit of electrical energy?
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  16. When the relative permeability of a material is slightly less than 1a it is called _____ material.
  17. Magnetic effects of the earth as a huge magnet with north and south poles.
  18. The resistivity of a conductor ___________ with an increase in temperature.
  19. The conduction of electricity across the surface of a dielectric is called
  20. Hysteresis loss can be reduced by one of the following.
  21. Materials that have very high permeabilities (hundreds and even thousands times of that of free space)
  22. The quantity 10^6 maxwells is equivalent to one
  23. One that has magnetic poles produced by internal atomic structure with no external current necessary
  24. How is mutual inductance between two coils decreased?
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  26. Permanent magnets can be found in
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  29. Which of the following is a paramagnetic material?
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