Question

the ratio of permittivity of medium to permittivity of vacuum is called​

Answer 1

Answer:

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The relative permittivity, or dielectric constant, of a material is its (absolute) permittivity expressed as a ratio relative to the vacuum permittivity. ... Relative permittivity is the factor by which the electric field between the charges is decreased relative to vacuum

Answer 2

Answer:

The ratio of the permittivity of the medium to permittivity of vacuum is known as dielectric current.

Explanation:

• When two charges are placed in any medium at some distance, they experience force known as coulombic force. One of the factors affecting the magnitude of this coulombic force is the medium in which these are placed.
• Permittivity is the property of a material or a medium that affects the coulomb force between two point charges when placed in that medium. Coulomb force is maximum for vacuum. Force in the other medium can be measured relative to it. The factor by which coulombic force between two charges is decreased relative to vacuum is defined as relative permittivity of the medium.
• Relative permittivity can also be defined as the ratio of absolute permittivity of the medium to the permittivity of the vacuum. Relative permittivity is also known as dielectric constant.
• It is also known as electric permittivity.
• It is a constant of proportionality that lies between electric field intensity and electric displacement.
• The constant of permittivity is equal to approximately  farad per meter in free space.
• Hence, the ratio of the permittivity of the medium is known as dielectric current.

Reference Link

• https://brainly.in/question/12218352
• https://brainly.in/question/1565220