part a and b (3pts) Which of the following statements is not true? (1) The EM wa

Question

part a and b

(3pts) Which of the following statements is not true? (1) The EM wave is a transverse wave. (2) When a wave propagates, the medium advances. (3) The EM wave can be considered plane waves in free space. (4) The energy of the wave is stored in the electric and magnetic fields. (a) s) Which of the following statements is not true for the wave propagtion in "Good conductors"i? (1) The attenuation constant is zero (2) The skin depth decreases with increasing frequency (3) The fields and associated currents are confined to a very thin layer of the conductor surface. (4) The electric field leads the magnetic field by 45°

Explanation / Answer

(a) The statement(2),i.e., when a wave propagates the medium advances, is not true. Because, electromagnetic waves propagate in vacuum. They do not need a medium to travel.

(b) The statement(3),i.e., the fields and associated currents are confined to a very thin layer of conductor surface, is not true.

Thank You.

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