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  • Question

  • A parallel plate capacitor has area of plate equal to 1 m and distance between plates is also 1 m2. The lossy dielectric has a complex dielectric constant ?r = ?'r - j ?"r. If the capacitor is represented by R and C is parallel, then


  • Options
  • A. A parallel plate capacitor has area of plate equal to 1 m and distance between plates is also 1 m2.
  • B. A parallel plate capacitor has area of plate equal to 1 m and distance between plates is also 1 m2.
  • C. A parallel plate capacitor has area of plate equal to 1 m and distance between plates is also 1 m2.
  • D. A parallel plate capacitor has area of plate equal to 1 m and distance between plates is also 1 m2.

  • Correct Answer
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    • Materials and Components problems

    Search Results

    • 1. M = (?r - 1)H.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. A rare gas has N atoms per m3. If electronic polarizability of single atom of this gas is ae, then

    • Options
    • A. ?r = Nae
    • B. ?0?r = Nae
    • C. ?0(?r - 1) = Nae
    • D. ?0(?r - 2) = Nae
      • Discuss
    • 3. Sulphur hexafluoride is used in

    • Options
    • A. transformers
    • B. generators
    • C. relays
    • D. circuit breakers
      • Discuss
    • 4. Iron has a body centred cubic structure.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. When an electron moves at velocity v in combined electric and magnetic fields E and H, the Lorentz force F is F = - e(E + v x B).

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. Which of the following is used in temperature alarm circuits?

    • Options
    • A. Thermistor
    • B. Photoconductor
    • C. Transistor
    • D. Varistor
      • Discuss
    • 7. The v-i characteristic shown in the given figure is for

    • Options
    • A. thermistor
    • B. photoconductor
    • C. varistor
    • D. none of the above
      • Discuss
    • 8. The Ohm's law for conduction in metals is

    • Options
    • A. J = ?E
    • B. J =
    • C. J ? ?E
    • D. J ?
      • Discuss
    • 9. Soft iron is suitable for making temporary magnets.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. A specimen of metal has n valence electrons per m3. If vx is the average velocity of these electrons, each having a charge e, the current density J is

    • Options
    • A. J = ne vx
    • B. J = - ne vx
    • C. J =
    • D. J =
      • Discuss

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