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If two similar charges 1 coulomb each are placed 1 m apart in aira then the force of repulsion is

A. 8 10^6 N

B. 9 10 ^9 N

C. 10^6 N

D. 5 10^6 N

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  1. A commercial alloy of aluminum nickela and iron with cobalta copper and titanium added to produce about…
  2. The reluctance of the magnetic circuit is ________ relative permeability of the material comprising…
  3. The idea of preventing one component from affecting another through their common electric and magnetic…
  4. Electrons at the outer shell are called
  5. The temperature coefficient of resistance of conductors is
  6. The force of attraction or repulsion between two magnetic poles is inversely proportional to the square…
  7. It is the reciprocal of reluctance and implies the case of readiness with which magnetic flux is developed.
  8. The potential at a point due to a charge is 15 V. If the distance is times, the potential at the point…
  9. Which element has four valence electrons?
  10. When a wire loop is rotated in a magnetic field the direction of the induced emf changes one in every…
  11. Electric field intensity is measured in
  12. Lenz's law is the consequence of the law of conservation of
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    A magnetic pole produces 5000 field lines. How much is the flux in webers? A. 50 10^-6
  14. What is the unit of reluctance?
  15. The ratio between the intensity of magnetization produced in a substance to the magnetizing force producing…
  16. The physical motion resulting from the forces of magnetic fields is called
  17. If the length and area of cross-section of a wire are doubleda then its resistance
  18. Defined as the flux density produced in it due to its own induced magnetism
  19. Magnetic fields do not interact with
  20. Back emf refers to the
  21. Two similar polesa each 1Wba placed 1 m apart in air will experience a repulsive force of
  22. What determines the atomic number of an element?
  23. What is the diameter of an atom?
  24. The simplest type of atom to exist is the ______ atom.
  25. The magnetic field inside a solenoid
  26. One that has magnetic poles produced by internal atomic structure with no external current necessary
  27. A group of magnetically aligned atoms is called
  28. The permeability of a material having a flux density of 5 Wb/m^2 is 10^-5 H/m. What is the value of…
  29. Amorphous solid is also called
  30. If the magnetic material is located within a coil through which alternating current (60 Hz frequency)…