Electrical Engineering > GATE 2020 > Electrostatics
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 = ar2r + aφ(3 / r) + az6
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 permittivity, ε0, in SI units is given by:
E = ar2r + aφ(3 / r) + az6
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 permittivity, ε0, in SI units is given by:
Correct : d
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