Question

the dielectric constant k of air and vaccum is​

Answer 1

The value of the dielectric constant at room temperature (25 °C, or 77 °F) is 1.00059 for air, 2.25 for paraffin, 78.2 for water, and about 2,000 for barium titanate (BaTiO3) when the electric field is applied perpendicularly to the principal axis of the crystal.

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Answer 2

The dielectric constant k of air and vaccum is 1.00000