Question
Define the dielectric constant of a medium.
✓
Answer
The ratio of absolute permittivity of a medium and permittivity of air or vacuum is called dielectric constant (relative permittivity) of the medium.
Therefore, $\epsilon_{ r }=\frac{\epsilon}{\epsilon_0}$ or $\epsilon=\epsilon_{ o } \epsilon_{ T }$
Therefore, $\epsilon_{ r }=\frac{\epsilon}{\epsilon_0}$ or $\epsilon=\epsilon_{ o } \epsilon_{ T }$
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