obtain the relation between relation permitting and absolute permittivity of force space
Answers
Answer:
The equation where you should start from is the relation between electric field E and electric displacement D (in scalar form):
D=ε0*εr*E
The difference of being in free space and being in matter is then the value of εr caused by the polarization in matter. The electric field causes this polarization and (e.g. since it compensates charges through orientation of dipoles in a capacitor), lowers the density of the field lines by a factor 1/εr. In contrast, D stays the same, irrespective of the nature of matter. The permittivity ε is given by ε = ε0 εr and replaces ε0 in Coulombs law to account for matter. So the function of the relative permittivity is to relate the permittivity of a material to the permittivity of vacuum. Hope this clarifies things!