Question

Calculate the attenuation constant of a conductor of conductivity 200 units, frequency 1M radian/s in air. (a) 11.2 (b) 1.12 (c) 56.23 (d) 5.62 I got this question by my school principal while I was bunking the class. This is a very interesting question from Plane Waves in Good Conductor topic in division EM Wave Propagation of Electromagnetic Theory Select the correct answer from above options Electromagnetic Theory questions and answers, Electromagnetic Theory questions pdf, Electromagnetic Theory question bank, Electromagnetic Theory questions and answers pdf, mcq on Electromagnetic Theory pdf,electromagnetic theory book pdf,electromagnetic theory pdf notes,electromagnetic theory lecture notes,electromagnetic theory of light,maxwell electromagnetic theory,electromagnetic theory proposed by,electromagnetic theory engineering physics,electromagnetic theory nptel

Answer 1

Correct choice is (a) 11.2 Explanation: The attenuation constant of a conductor is given by α = √(ωμσ/2). On substituting ω = 10^6, σ = 200 and μ = 4π x 10^-7, we get α = 11.2 units.