Question

What is the dielectric constant of Nylon 6, 6 at 60 Hz?

(a) 3.5

(b) 4

(c) 7

(d) 8

The question was posed to me in a national level competition.

I'm obligated to ask this question of Polarisation and Dielectrics topic in section Refractories & Dielectric Materials of Engineering Material & Metallurgy

Answer 1

Correct choice is (b) 4

The best I can explain: The dielectric constant is that value which denotes the ability of a material to accumulate electrical energy.  Nylon 6, 6 is an important dielectric material having a dielectric strength of 15 * 106 Vm^-1 and a dielectric constant of 8 at 60 Hz, or 3.5 at 106 Hz. The dielectric constants of plasticized polyvinyl chloride and mica are 7 and 8 respectively.