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Electrons at the outer shell are called

A. Outer shell electrons

B. Inner shell electrons

C. Semiconductor electrons

D. Valence electrons

Correct Answer : D.


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  1. If the number of valence electrons of an atom is less than 4a the substance is called
  2. Which of the following is a diamagnetic material?
  3. The branch of Engineering which deals with the magnetic effect of electric current is known as
  4. What is the SI unit of conductance?
  5. A good conductor has how many valence electrons?
  6. The emf induced in a coil due to the changing current of another neighboring coil is called
  7. If the value of 25 of a conductor is 1/230 per oCa then the value of 0is
  8. Which of the following electric quantities is vector in character?
  9. The magnetic field inside a solenoid
  10. A magnetic field is
  11. A theorem which states that an electric current flowing in a circuit produces a magnetic field at external…
  12. What is the SI unit of reluctance?
  13. The magnetic flux of 2000 lines is how many Maxwells?
  14. If the length and area of cross-section of a wire are doubleda then its resistance
  15. Which element has four valence electrons?
  16. What type of bond is formed when there exists some form of collective interactions between the (negatively…
  17. The phenomenon that when an electric current passes through an anisotropic crystala there is an absorption…
  18. The temperature coefficient of resistance of insulators is
  19. How many neutrons does a copper atom have?
  20. The direction of force o a current carrying conductor placed in a m found by
  21. If the right handed bottle-opener cork screw is assumed to be along the conductor so as to advance in…
  22. What is the practical unit of electrical energy?
  23. The electrons in the last orbit of an atom are called _______ electrons.
  24. The resistivity of a conductor ___________ with an increase in temperature.
  25. A positively charged body has
  26. The unit of flux is _____ in cgs system.
  27. If the magnetic material is located within a coil through which alternating current (60 Hz frequency)…
  28. The magnetic flux through a wire loop in a magnetic field does not d
  29. Whenever a conductor cuts magnetic fluxa an emf is induced in it. This is known as
  30. The electric potential at a point in air due to a charge is 21 V. If the air is replaced by a medium…