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All magnetic field originates from

A. moving electric charge

B. Iron atoms

C. Magnetic domain

D. Permanent magnets

You can do it
  1. __________ is a substance of whose molecules consist of the same kind of atom.
  2. At/m is a unit of
  3. The electric field intensity between the parallel plate air capacitor is 20 N/C. If an insulating slab…
  4. When the relative permeability of a material is slightly more than 1a it is called ______ material.
  5. The phenomenon by which a subtracts pieces of iron
  6. What is the SI unit of magnetic flux?
  7. Three charges of +5 Ca -6 C and +9 C are placed inside a sphere. What is the total flux passing through…
  8. The resistivity of a conductor ___________ with an increase in temperature.
  9. The magnetic field of a bar magnet most closely resembles the magnetic field of
  10. A magnetic field is
  11. What is another name for relative permittivity?
  12. How many turns are needed to produce a magnetomotive force of 1000 A.t for a coil with 6 amperes?
  13. What is the diameter of an atom?
  14. Flux linkages equals
  15. Germanium atom has ______ protons and ______ electrons.
  16. The magnetic flux through a wire loop in a magnetic field does not d
  17. What solid has no defined crystal structure except perhaps in the arrangement of the nearest neighboring…
  18. The net electrical charge in an isolated system remains constant. This is known as
  19. Defined as a closed path in which magnetic induction or flux flows
  20. A group of magnetically aligned atoms is called
  21. The force between two magnetic poles is _____ the relative permeability of the medium.
  22. A magnetic material losses its ferromagnetic properties at a point called
  23. The force between two magnetic poles varies with the distance between them. The variation is ______…
  24. The simplest type of atom to exist is the ______ atom.
  25. Two similar polesa each 1Wba placed 1 m apart in air will experience a repulsive force of
  26. Who discovered superconductivity in 1911?
  27. Paramagnetic substance has a relative permeability of
  28. The space outside the magnet where its pole have a force of attraction or repulsion on a magnetic pole…
  29. The magnitude of the induced emf in a coil is directly proportional to the rate of change of flux linkages.…
  30. An electron- volt (eV) is a unit of