# Physics: Dielectric Constant

A parallel plate capacitor has a capacitance of 9.1 μF when filled with a dielectric. The area of each plate is 2.0 m2 and the separation between the plates is 1.5 x 10-5 m. What is the dielectric constant of the dielectric?

1. 👍 0
2. 👎 0
3. 👁 313
1. C=εε₀A/d
ε=Cd/ε₀A =
=9.1•10⁻⁶•1.5•10⁻⁵/8.85•10⁻¹²•2 =7.7.

1. 👍 0
2. 👎 0

## Similar Questions

1. ### PHySics

A 1.63 nF parallel-plate capacitor is charged to an initial potential difference ΔVi = 100 V and then isolated. The dielectric material between the plates is mica, with a dielectric constant of 5.00. (a) How much work is required

2. ### Physics

A parallel-plate capacitor is made from two plates 12.0cm on each side and 4.50mm apart. Half of the space between these plates contains only air, but the other half is filled with Plexiglas of dielectric constant 3.40. An 18.0 V

3. ### Physics

An air-filled parallel-plate capacitor has plates of area 2.30 cm2 separated by 1.50 mm. (a) Find the value of its capacitance. The capacitor is connected to a 12.0-V battery. (b) What is the charge on the capacitor? (c) What is

4. ### physics

An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.70 mm. If a 19.2-V potential difference is applied to these plates, calculate the following: (a) the electric

1. ### Physics

Two capacitors are identical, except that one is empty and the other is filled with a dielectric (k = 4.2). The empty capacitor is connected to a 14 -V battery. What must be the potential difference across the plates of the

2. ### Physics

The voltage across an air-filled parallel-plate capacitor is measured to be 219.0 V. When a dielectric is inserted and completely fills the space between the plates as in the figure below, the voltage drops to 64.4 V. What is the

3. ### Physics

The potential difference between the plates of a parallel plate capacitor is 35 V and the electric field between the plates has strength of 750 V/m. If the plate area is 4.0 × 10-2 m2, what is the capacitance of this capacitor?

4. ### Capacitors

A parallel plate capacitor has area of 2cm^2 and a plate separation of 1mm. Find capacitance.

1. ### electronics technician

1. A circuit contains a 10 F capacitor and a 30 F capacitor connected in parallel. What is the total capacitance of the circuit? A. 7.5 F C. 40 F B. 20 F D. 47 F 2. What is the time constant of a 2 mH inductor and a 200 

2. ### Physics

The plates of an air-filled parallel-plate capacitor with a plate area of 18.5 cm2 and a separation of 9.25 mm are charged to a 125-V potential difference. After the plates are disconnected from the source, a porcelain dielectric

3. ### Physics

Two parallel plates are separated by a dielectric of thickness 2 mm with a dielectric constant of 6. If the area of each plate is 40 cm^2 and the potential difference between them is 1.5 kV, determine (a) the capacitance

4. ### physic

A dielectric-filled parallel-plate capacitor has plate area A = 10.0cm2 , plate separation d = 7.00mm and dielectric constant k = 3.00. The capacitor is connected to a battery that creates a constant voltage V = 7.50V . Throughout