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Dielectric constant of a medium is unity. Its permittivity will be:

  • a)
    Zero

  • b)
    1

  • c)
    8.854 x 10 − 12 C 2 N − 1 m − 2

  • d)
    8.854 x 1012 C2 N-1 m-2

Correct answer is option 'C'. Can you explain this answer?
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Dielectric constant of a medium is unity. Its permittivity will be:a)Z...
C) 8.854 x 10^-12 F/m

The permittivity of a medium is related to its dielectric constant by the formula:

ε = ε0κ

where ε0 is the permittivity of free space (8.854 x 10^-12 F/m) and κ is the dielectric constant of the medium.

If the dielectric constant is unity, then κ = 1, and the permittivity is:

ε = ε0κ = ε0(1) = 8.854 x 10^-12 F/m
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