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Home » A parallel plate air capacitor has capacity ′C′ farad, potential ′V′ volt and energy ′E′ joule. When the gap between the plates is completely filled with dielectric.
A parallel plate air capacitor has capacity ′C′ farad, potential ′V′ volt and energy ′E′ joule. When the gap between the plates is completely filled with dielectric.
Physics | Physics
A parallel plate air capacitor has capacity ′C′ farad, potential ′V′ volt and energy ′E′ joule. When the gap between the plates is completely filled with dielectric.
  1. Both V and E increase
  2. Both V and E decrease
  3. V increases, E decreases
  4. V decreases, E increases
Solution: The correct answer is B Both V and E decrease
A dielectric capacitor with parallel plates. Because the dielectric material is polarised, it produces an opposite-field, the electric field between the plates is lowered. Because potential is inversely proportional to the dielectric constant, when there is a dielectric, the potential is also reduced.
V′ = V/K where K is dielectric constant.
i

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