Materials and Components - Engineering

Q1:

From a homogeneous and isotropic dielectric material of dielectric constant ∈r, a small volume element is taken out creating a cavity. The field can be kept homogeneous if Di. (i.e., electric flux density inside the cavity) and D0 (i.e., electric flux density outside the cavity) are such that

A D0 = Di

B

C

D either (a) or (b)

ANS:B -

Since the field is homogeneous .