The magnetic field around the conductor is determined by the

A. Size of the conductor

B. Amount of current

C. Current divided by the resistance

D. Resistance divided by the current

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  1. If the relative permittivity of a material is 10a then its permittivity is
  2. If a magnetic flux cuts across 200 turns at a rate of 2Wb/sa the induced voltage according to Faraday's…
  3. Who demonstrated that there are magnetic effects around every current-carrying conductor and that current-carrying…
  4. The temperature coefficient of resistance of conductors is
  5. A law that states that the current in a thermionic diode varies directly with the three- halves power…
  6. The reluctance of a magnetic circuit is not dependent on which of the following?
  7. Whenever a flux inking a coil or current changesa an emf is induced in it. This is known as
  8. Hysteresis loss can be reduced by one of the following.
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  12. A t/m is a unit of
  13. What is the reluctance of a magnetic path having a length of 2x 10^-3m and crosssectional area of 2.5…
  14. Steel is hard to magnetize because of its
  15. If the solenoid is gripped by the right hand with the fingers pointing the direction of current flowa…
  16. If the value of 25 a conductor is 1/255 per oCa then the value of 20is
  17. A negatively charge body has
  18. Which of the following is a natural magnet?
  19. Electric field intensity is measured in
  20. What is the unit of reluctance?
  21. Germanium atom has ______ protons and ______ electrons.
  22. Materials whose permeabilities are slightly greater than that of free space
  23. A germanium atom has an atomic weight of72. How many neutrons are there?
  24. When the ferromagnetic substance is inserted in a current- carrying solenoida the magnetic field is
  25. The magnetic field of a magnetized iron bar when strongly heated
  26. Who discovered that a current-carrying conductor would move when placed in a magnetic field?
  27. What principle states that each electron in an atom must have a different set of quantum numbers?
  28. The net electrical charge in an isolated system remains constant. This is known as
  29. A good conductor has how many valence electrons?
  30. Which element has four valence electrons?