A dielectric material contains 7 x 1020 polar molecules/m³, each of dipole moment 3 x 10-2 C.m. Assuming that all the dipoles are aligned in the direction of the electric field E =7 × 10* V/m. the value of the relative permittivity of dielectric is O a. 4.39 O b. 11.18 Oc 7.79 O d. 14.57 O e. 3.54 Of. 17.965
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