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The ability of a mechanically stressed ferromagnetic wire to recognize rapid switching of magnetization when subjected to a dc magnetic field.

A. Wartheim effect

B. Wiedemann effect

C. Wiegand effect

D. Edison effect

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  1. The force between two magnetic poles is _____ their poles strength.
  2. Hipernik is an alloy containing __________ iron and __________ nickel.
  3. Define as that pole which when placed in air from a similar and equal pole repels it with a force of…
  4. Referred to as the specific reluctance of a material
  5. The direction of force o a current carrying conductor placed in a m found by
  6. Defined as a closed path in which magnetic induction or flux flows
  7. If a 20 V potential is applied across a relay coil with 50 turns having 1 ? of resistancea the total…
  8. The electric field intensity between the parallel plate air capacitor is 20 N/C. If an insulating slab…
  9. The unit of electrical energy is
  10. Hydrogen is an example of a _____ material.
  11. It is the reciprocal of reluctance and implies the case of readiness with which magnetic flux is developed.
  12. The quantity of magnetism retained by a magnetic material after withdrawal of the magnetizing force…
  13. The magnetic materials should have a large hysteresis loss for one of the following applications.
  14. Who demonstrated the theory of electromagnetic induction in 1831?
  15. Bonding of atoms that is due to the force of attraction between positive ions and a group of negative…
  16. How many turns are needed to produce a magnetomotive force of 1000 A.t for a coil with 6 amperes?
  17. If the magnetic material is located within a coil through which alternating current (60 Hz frequency)…
  18. The phenomenon by which a subtracts pieces of iron
  19. Hysteresis refers to the ______ between flux density of the material and the magnetizing force applied.
  20. The force of attraction or repulsion between two magnetic poles is directly proportional to their strengths.
  21. The reluctance of the magnetic circuit is ________ relative permeability of the material comprising…
  22. A 6- V battery is connected across a solenoid of 100 turns having a resistance of 2 ?a Calculate the…
  23. Refers to the non- metallic materials that have the ferromagnetic properties of iron.
  24. A factor used to correct for the electrostatic forces of the more distant ions in an ionic solid.
  25. If the number of valence electrons of an atom is less than 4a the substance is called
  26. An electron- volt (eV) is a unit of
  27. The relative permeability of a magnetic material is 10^5. What is its permeability?
  28. An atom or a group of atoms that carries a net electric charge.
  29. At/m is a unit of
  30. A t/m is a unit of