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  • Question
  • The units of polarization of dielectric are


  • Options
  • A. The units of polarization of dielectric are Cm Polarization P = ?0(?r - 1)E. Therefore units of Pola
  • B. The units of polarization of dielectric are Cm Polarization P = ?0(?r - 1)E. Therefore units of Pola
  • C. Cm
  • D. The units of polarization of dielectric are Cm Polarization P = ?0(?r - 1)E. Therefore units of Pola

  • Correct Answer
  •  

    Explanation
    Polarization P = ?0(?r - 1)E.

    Therefore units of Polarization = The units of polarization of dielectric are Cm Polarization P = ?0(?r - 1)E. Therefore units of Pola.


    Materials and Components problems


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    • 1. The most important primary force of attraction in the formation of solids is

    • Options
    • A. electromagnetic
    • B. electrostatic
    • C. quantum-electrostatic
    • D. quantum electromagnetic
    • Discuss
    • 2. Assertion (A): In a conductor, current density remains constant in time as long as E is constant.

      Reason (R): In a conductor, J = ?E.


    • Options
    • A. Both A and R are true and R is correct explanation of A
    • B. Both A and R are true but R is not correct explanation of A
    • C. A is true but R is false
    • D. A is false but R is true
    • Discuss
    • 3. The number of valence electrons in trivalent impurity is

    • Options
    • A. 5
    • B. 4
    • C. 3
    • D. 1
    • Discuss
    • 4. An air cored inductance is a

    • Options
    • A. linear circuit element because its reactance varies linearly with voltage at a fixed frequency
    • B. linear circuit element because its current varies linearly with voltage at a fixed frequency
    • C. nonlinear circuit element due to saturation of core
    • D. nonlinear circuit element because v =
    • Discuss
    • 5. Assertion (A): An amorphous material is obtained when mobility of atoms is inhibited during solidification.

      Reason (R): Crystalline state is a natural state for most solids.


    • Options
    • A. Both A and R are true and R is correct explanation of A
    • B. Both A and R are true but R is not correct explanation of A
    • C. A is true but R is false
    • D. A is false but R is true
    • Discuss
    • 6. Antiferromagnetic materials do not have permanent dipoles.

    • Options
    • A. True
    • B. False
    • Discuss
    • 7. Silicon and germanium are elements in the

    • Options
    • A. second column of periodic table
    • B. third column of periodic table
    • C. fourth column of periodic table
    • D. fifth column of periodic table
    • Discuss
    • 8. An atom of polarizability a is placed in a homogeneous electric field E. The energy stored in polarized atom is

    • Options
    • A. aE2
    • B. a2E
    • C. ½ aE2
    • D. ½ aE
    • Discuss
    • 9. A capacitor can be represented by a capacitance and resistance in parallel. For a good capacitor, this parallel resistance should be

    • Options
    • A. negligible
    • B. low
    • C. high
    • D. very high
    • Discuss
    • 10. When a potential is applied across an intrinsic semiconductor, holes flow

    • Options
    • A. towards positive terminal
    • B. away from positive terminal
    • C. in the external circuit only
    • D. none of the above
    • Discuss


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