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

A.

B.

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  2. Cobalt is an example of a ______ material.
  3. Which of the following is a diamagnetic material?
  4. Materials whose permeabilities are slightly greater than that of free space
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  13. A magnetic field is
  14. Electric field intensity is a ________.
  15. All magnetic field originates from
  16. Electric field intensity is measured in
  17. Which of the following is a natural magnet?
  18. How much is the flux in Weber in the above problem?
  19. If the length and area of cross-section of a wire are doubleda then its resistance
  20. There are how many compounds available in nature?
  21. The relative permeability of a magnetic material is 10^5. What is its permeability?
  22. The emf induced in a coil due to the change of its own flux linked with it is called
  23. The branch of Engineering which deals with the magnetic effect of electric current is known as
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  25. Electric field intensity at a point due to a given charge ______ if the relative permittivity of the…
  26. What revolves about the positive nucleus in a definite orbit?
  27. Residual magnetism refers to the flux densitya which exists in the iron core when the magnetic field…
  28. The flux density in an air-cored coil is 10^-3 Wb/m^2. With a cast iron core of relative permeability…
  29. The temperature coefficient of resistance of insulators is
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