Dielectric Constant Calculator

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Dielectric Constant Calculator :

Enter the values of permittivity of the material, E(F/m) and permittivity of free space, E0(F/m) to determine the value of Dielectric Constant, k.

Enter Permittivity of the Material: F/m
Enter Permittivity of Free Space : F/m
   
Result – Dielectric Constant:

Dielectric Constant Formula:

The dielectric constant, also known as relative permittivity (k), is a measure of a material’s ability to store electrical energy in the presence of an electric field. It is a dimensionless quantity that compares the permittivity of a material (E) to the permittivity of a vacuum (E0​), which is a universal constant.

Dielectric materials with high dielectric constants can store more electrical energy, making them essential in applications like capacitors, insulators, and electronic circuits. The value of the dielectric constant depends on the material’s molecular structure, temperature, and frequency of the applied electric field.

The dielectric constant has no units and typically has a value greater than 1, as the permittivity of all materials exceeds that of a vacuum. The higher the dielectric constant, the greater the material’s ability to reduce the electric field within it, effectively increasing capacitance. Common materials like air have a dielectric constant close to 1, while others like ceramics can have very high values.

Dielectric Constant, k equals the permittivity of the material, E(F/m) in Farads per metre divided by the permittivity of free space, E0(F/m) in Farads per metre​.Dielectric Constant, k = E(F/m) / E0(F/m)

k = dielectric constant.

E(F/m) = permittivity of the material in Farads per metre, F/m.

E0(F/m) = permittivity of free space in Farads per metres, F/m(8.85 * 10−12 F/m).

Dielectric Constant Calculation:

  1. A material has a permittivity of 4.425 * 10−11F/m. Calculate its dielectric constant.

Given: E(F/m) = 4.425 * 10−11F/m, E0(F/m) = 8.85 * 10−12 F/m.

Dielectric Constant, k = E(F/m) / E0(F/m)

k = 4.425 * 10−11 / 8.85 * 10−12

k = 5.

  1. A material has a dielectric constant 2.5. Calculate its permittivity.

Given: k = 2.5, E0(F/m) = 8.85 * 10−12 F/m.

Dielectric Constant, k = E(F/m) / E0(F/m)

E(F/m) = k * E0(F/m)

E(F/m) = 2.5 * 8.85 * 10−12

E(F/m) = 2.2125 * 10−11F/m.

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