question_answer

The dielectric constant of water is 80. What is its permittivity?              

Answer:

                Dielectric constant, \[\kappa =\frac{\varepsilon }{{{\varepsilon }_{0}}}\] \[\therefore \]Permittivity, \[\varepsilon =\kappa {{\varepsilon }_{0}}=8.854\times {{10}^{-12}}\times 80\] \[\mathbf{=7}\mathbf{.083\times 1}{{\mathbf{0}}^{\mathbf{-10}}}{{\mathbf{C}}^{\mathbf{2}}}{{\mathbf{N}}^{\mathbf{-1}}}{{\mathbf{m}}^{\mathbf{-2}}}.\]