Answer to Question #218295 in Electricity and Magnetism for Anita

Question

Seawater has epsilon r = 80. Its permittivity is

(a) 81

(b) 79

(c) 5.162 x 10^-10 F/m

(d) 7.074 x 10^-10 F/m

Answer 1

Gives

$\epsilon_0=8.85\times10^{-12}c^2/Nm^2$

$\epsilon_r=80$

We know that

$\epsilon=\epsilon_0\epsilon_r$

$$\epsilon=8.85\times10^{-12}\times80=7.074\times10^{-10}F/m$$

Option (D) is correct option