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Unit of relative permittivity is

AC/m

BC/m²

CV/m²

DNo unit

Answer:

D. No unit

Read Explanation:

  • Definition: Relative permittivity, also known as the dielectric constant, is defined as the ratio of the permittivity of a substance (ε) to the permittivity of free space (ε₀).

  • Mathematical Formula: It is represented as εᵣ = ε / ε₀.

  • Unitless Property: Since relative permittivity is a ratio of two quantities with the same physical dimensions (both being permittivity measured in Farads per meter, F/m), the units cancel out. Therefore, it is a dimensionless and unitless physical quantity.

  • Characteristics: Because it is a ratio, its value is independent of the system of units being used (SI, CGS, etc.).


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