Question

Skin effect refers ________

(a) the increase of wire resistance with frequency

(b) the decrease of wire resistance with frequency

(c) the uniform nature of wire resistance with frequency

(d) the way radio signals travel across a flat surface

This question was addressed to me during a job interview.

I need to ask this question from Bandwidth of FM Signal with Arbitrary m(t) in section Angle Modulation of Analog Communications

Answer 1

The correct choice is (a) the increase of wire resistance with frequency

Easiest explanation: Skin effect becomes more and more apparent as frequency increases as skin depth becomes smaller. It is due to alternating current flowing through the outer surface of conducting material. It refers to the increase of wire resistance with frequency.