Physics

posted by .

A parallel-plate capacitor has a capacitance of 2.1 µF with air between the plates. The capacitor is connected to a 24 V battery and charged. The battery is then removed. When a dielectric is placed between the plates, a potential difference of 2.8 V is measured across the plates. What is the dielectric constant of the material?

  • Physics -

    In an isolated instance the voltage goes down by a factor of K.

    24 v / k = 2.8 v
    k = 8.6 (rounded to sig figs)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. 12th grade

    A certain parallel plate capacitor consists of two identical aluminium plates each of area 2times 10^-4 m^2.the plates are separated by a distance of 0,03mm, with air occupying the space between the plates. 1-CALCULATE THE CAPACITANCE …
  2. Physics

    A certain parallel capacitor consist of two identical aluminium plates, each of area 2times 10^-4m^2. the plates are separated by a distance of 0,03mm, with air occupying the space between the plates. CALCULATE THE CAPACITANCE OF THE …
  3. Physics

    A capacitor has two overlapping plates of width 4.9 m and length 3.5 m separated by 1.3 cm. A dielectric of dielectric constant ê = 58.0 fills the space between the plates. If this capacitor is connected to a 35 V battery, how much …
  4. Physics

    A parallel plate capacitor with plate separation d is connected to a battery. The capacitor is fully charged to Q Coulombs and a voltage of V. (C is the capacitance and U is the stored energy.) Answer the following questions regarding …
  5. Physics

    A parallel-plate capacitor is charged by a battery and then the battery is removed and a dielectric of constant K is used to fill the gap between the plates. Inserting the dielectric changes the energy stored by a factor of A)2. B)1/K. …
  6. Physics: Manitude of Surface Charge on Dielectric

    An empty capacitor has a capacitance of 1.86 μF and is connected to a 12-V battery. A dielectric material (κ = 4.5) is inserted between the plates of this capacitor. What is the magnitude of the surface charge on the dielectric …
  7. Physics

    A q = +3.00 mC test charge is placed inside a constant uniform electric field created in a parallel plate capacitor connected to a battery of unknown voltage.   The capacitor is made of two parallel plates each with area equal to …
  8. physics

    a parallel plate capacitor has an area of 5cm^2 and a capacitance of 3.5PF. the capacitor is connected to a 12v battery .after the capacitor is completely charge up the battery is removed. a)what must be the separation of the plates …
  9. physics

    parallel plate capacitor has an area of 5cm^2 and a capacitance of 3.5PF. the capacitor is connected to a 12v battery .after the capacitor is completely charge up the battery is removed. a)what must be the separation of the plates …
  10. please help physics

    parallel plate capacitor has an area of 5cm^2 and a capacitance of 3.5PF. the capacitor is connected to a 12v battery .after the capacitor is completely charge up the battery is removed. a)what must be the separation of the plates …

More Similar Questions