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What is the absolute permittivity of a dielectric medium where ϵ0 is the permittivity of free space and ϵ1 is the relative permittivity of the medium? 
The potential gradient across the material of low permittivity is than across the material of high permittivity.
A porous solid dielectric has a relative permittivity of 4. It is to be impregnated by a liquid dielectric whose relative permittivity should ideally be
What happens to relative permittivity when actual permittivity decreases?
What is the relative permittivity when the actual permittivity is 4F/m?
What happens to absolute permittivity when relative permittivity increases?
Calculate the actual permittivity of a medium whose relative permittivity is 5.
Calculate the relative permittivity of the second dielectric if the relative permittivity of the first is 4. The electric field strength of the first dielectric is 8V/m and that of the second is 2V/m.
A silicon PN junction diode under revers bias has depletion width of 10µm, relative permittivity is 11.7 and permittivity, ε0 =8.85×10-12F/m. Then depletion capacitance /m2 =?
The total permittivity of a dielectric transformer oil (relative permittivity is 2.2) will be (in order 10-11)