If the right handed bottle-opener cork screw is assumed to be along the conductor so as to advance in the direction of current flow, the motion of its handle will indicate the direction of magnetic flux produced around the conductor. This is known as

A. Right hand rule

B. Left hand rule

C. Cork screw rule

D. End rule

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  1. The ability of a material to conduct magnetic flux through it.
  2. Back emf refers to the
  3. The electric field intensity between the parallel plate air capacitor is 20 N/C. If an insulating slab…
  4. Who discovered the most important electrical effects which is the magnetic effect?
  5. The emf produced in a wire by its motion across a magnetic field does not depend upon the
  6. Why is it that the magnitude of magnetomotive force required for air gap is much greater than that required…
  7. A good conductor has how many valence electrons?
  8. Whenever a conductor cuts magnetic fluxa an emf is induced in it. This is known as
  9. If the number of valence electrons of an atom is less than 4a then the substance is probably
  10. The electric potential at a point in air due to a charge is 21 V. If the air is replaced by a medium…
  11. What is the maximum number of electrons that can be accommodated in the last orbit of an atom?
  12. A one cubic cm of copper has how many free electrons at room temperature?
  13. When the relative permeability of a material is slightly less than 1a it is called _____ material.
  14. The force of attraction or repulsion between two magnetic poles is directly proportional to their strengths.
  15. What is the diameter of an atom?
  16. The force between two magnetic poles is _______ their pole strengths.
  17. The force between two magnetic poles is _____ their poles strength.
  18. What is the typical saturation flux density for most magnetic materials?
  19. The force between two magnetic poles varies with the distance between them. The variation is ______…
  20. What is the SI unit of magnetic flux?
  21. If the number of valence electrons of an atom is more than 4a the substance is called
  22. The flux density in an air-cored coil is 10^-3 Wb/m^2. With a cast iron core of relative permeability…
  23. Hysteresis is a phenomenon of _________ in a magnetic circuit.
  24. What is the SI unit of conductivity?
  25. A law that states that the current in a thermionic diode varies directly with the three- halves power…
  26. Three charges of +5 Ca -6 C and +9 C are placed inside a sphere. What is the total flux passing through…
  27. Which of the following magnetic materials can be easily magnetized in both direction?
  28. Small voltages generated by a conductor with current in an external magnetic field.
  29. If two similar charges 1 coulomb each are placed 1 m apart in aira then the force of repulsion is
  30. Referred to as the specific reluctance of a material