The static electric field inside a dielectric medium with relative permittivity εr = 2.25, expressed in cylindrical coordinate system is given by the following expression\(E = {a_r}\;2r + {a_\phi }\left( {\frac{3}{r}} \right) + {a_z}\;6\)Where ar, aϕ, az are unit vectors along r, ϕ and z directions, respectively. If the above expression represents a valid electrostatic field inside the medium, then the volume charge density associated with this field in terms of free space permittvity, ε0, in SI units is given by

The static electric field inside a dielectric medium with relative per

1.	The static electric field inside a dielectric medium with relative permittivity εr = 2.25, expressed in cylindrical coordinate system is given by the following expression\(E = {a_r}\;2r + {a_\phi }\left( {\frac{3}{r}} \right) + {a_z}\;6\)Where ar, aϕ, az are unit vectors along r, ϕ and z directions, respectively. If the above expression represents a valid electrostatic field inside the medium, then the volume charge density associated with this field in terms of free space permittvity, ε0, in SI units is given by
A.	3 ε0
B.	4 ε0
C.	5 ε0
D.	9 ε0
Answer» E.