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An alloy of 22 percent iron and 78 per cent nickel.

A. Permalloy

B. Alnico

C. Constantan

D. M anganin

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  1. What is the diameter of an atom?
  2. If the length and area of cross-section of a wire are doubleda then its resistance
  3. Under ordinary conditionsa a body is considered
  4. Which of the following is a diamagnetic material?
  5. The quantity 10^6 maxwells is equivalent to one
  6. The magnetic field of a bar magnet most closely resembles the magnetic field of
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  13. The current of electric circuit is analogous to which quantity of a m
  14. The unit of flux density is
  15. __________ is a substance of whose molecules consist of the same kind of atom.
  16. Materials that have very high permeabilities (hundreds and even thousands times of that of free space)
  17. A t/m is a unit of
  18. Who demonstrated the theory of electromagnetic induction in 1831?
  19. A positively charged body has
  20. The evaporation of electrons from a heated surface is called
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  22. If you hold the conductor with right hand so that the stretched thumb points in the direction of the…
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    If the resistance of a material 2 m long and 2 m^2 in area of cross-section is 1.6 10^-8 ?a then its resistivity is
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