Materials and Components - Engineering

Q1:

For dielectrics in alternating field, polarizability ae is a complex quantity. The imaginary part of ae is zero for

A ω = 0

B ω → ∞

C ω = 0 and ω → ∞

D ω = natural frequency ω0

ANS:C - ω = 0 and ω → ∞

Imaginary part of ae is zero for ω = 0 and ω = ∞.