Question

Electric constant of water is 81 find the absolute permittivity of water

Answer 1

K = E / E•

where k is dielectric constant, E is water permitivity and E• is permittvity of vacuum i.e. 8.85 x 10-12 F/m.

So E = 81 * 8.85 x 10-12 F/m = 7.16 x 10^-10 F/m