Describe electromagnetic shielding. A uniform wave propagating in free space strikes a lossy medium with a…

Question

Describe electromagnetic shielding. A uniform wave propagating in free space strikes a lossy medium with a dielectric constant of 20 and conductivity of 0.8 mS/m. The frequency of the wave polarized in the X-direction is 200 kHz. Determine the angular frequency, propagation constant, intrinsic impedance, and phase velocity. Outline three sources of electromagnetic radiations. A conductor of length 10 cm carries a current of 2A in a vertical direction. A point P is placed 1 m away from the conductor in the X-direction. Stretch the arrangement; determine the angle between the vertical axis and point P; determine magnetic field at point P using Biot-Savart law.

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b) A uniform wave propagating in free space strikes a lossy medium with a dielectric constant of 20 and conductivity of $0.8 \text{ mS/m}$ . The frequency of the wave polarized in the X-direction is $200 \text{ kHz}$ .

Given values:
Frequency, $f = 200 \text{ kHz} = 200 \times 10^3 \text{ Hz}$
Conductivity, $\sigma = 0.8 \text{ mS/m} = 0.8 \times 10^{-3} \text{ S/m}$
Relative dielectric constant, $\epsilon_r = 20$
Permeability of free space, $\mu_0 =

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