MCQ Subject: Electromagnetic Fields & Waves

In a lossy medium, a plane wave’s magnetic field component lags the electric field component in phase due to…

Which type of wave in electromagnetics can propagate in a waveguide without a cutoff frequency?

According to Faraday’s Law of Induction, the induced EMF (E) in a coil is proportional to which of the following?

At a frequency of 50 Hz, the skin depth in copper (conductor with μr = 1, σ = 5.96×10^7 S/m) is determined by which formula?

Across a planar interface between two non-conductive media with no surface charges, which of the following electromagnetic field components is guaranteed to be continuous for an incident electromagnetic wave?

At the surface of a Perfect Electric Conductor (PEC) in electrostatic conditions, which boundary condition MUST hold?

Which field component is discontinuous across a boundary with a surface current?

Which waveguide mode exhibits an electric field component along the direction of wave propagation?

Which fundamental law explains how a changing magnetic field induces an electromotive force (EMF) in a coil?

In which medium do electromagnetic waves travel at approximately 0.998c, where c is the speed of light in a vacuum?