Question

The waveguides are materials with characteristics of

(a) Low bulk resistivity

(b) High bulk resistivity

(c) High conductivity

(d) Low conductivity

This question was addressed to me in class test.

I'm obligated to ask this question of Types of Waveguides in division Waveguides of Electromagnetic Theory

Answer 1

Right option is (a) Low bulk resistivity

To explain I would say: Generally, the waveguides are made of materials with low bulk resistivity like brass, copper, silver etc. But if the interior walls are properly plated, it is possible with poor conductivity materials too. It is even possible to make plastic waveguides.