In a lossless dielectric material, which has the following properties: ε = 4εo, and μ = μo, the magnetic field intensity, H, is expressed as: H = 40 sin(ωt-15z) ax A/m (a) Calculate the angular frequency (ω). (b) Find the associated electric field intensity (E).
In a lossless dielectric material, which has the following properties: ε = 4εo, and μ =...
4. A uniform plane electromagnetic wave propagates in a lossless dielectrie medium with μ = μ° and ε = εγεο . The phasor electric field is given by the where Eo is a complex constant and ω is angular frequency. Note that the wavenumber of the dielectric k is not the free space wavenumber ko-alc = ωνμο (a) Find the relative dielectric constant&, (b) Find the direction of propagation n and draw it on the figure. (c) Sketch (draw) on...
Question A2 [20 marks] Two plane waves are propagating in a linear dielectric material (ε-ε0G, μ-Ho) and are described by their respective complex electric field vectors as shown below: (a) [2 marks] Write down the direction of propagation of wave 1 and that of wave 2 (b) [2 marks] Write down the polarization-direction of wave 1 and that of wave 2. (c) [4 marks] What is the total (real) electric field Etot-Ei +E2? (d) [4 marks] What is the total...
The electric field intensity of a uniform plane wave in a medium, σ=0, ε=ε0εr, μ=μ0 is: E= 12 sin(2pi x 10^7t - 3y)az V/m (a) Determine the polarization of the wave. (b) Find the frequency. (c ) Calculate εr. (d) Obtain the magnetic field intensity H.
3. A uniform plane electromagnetic wave propagates in a lossless dielectric medium with μ μ0 and ε ε,60 . The phasor electric field is given by the Note that the wavenumber of the dielectric k ko, where ko-o/c ωνμοε0 . Find the (a) relative dielectric permittivity (dielectric constant) (b) direction of propagation n, which is a unit vector (e) angle between the direction that the electric field vector points and the direction of in.
8. In a lossless Eq, λ and H. dielectric for which η,:20π, μ.-1,and E(z,t) 94πcos(wt +2z) a/m. Calculate 9. A plane wave in a lossless medium has H(z,t) 0.2 cos(ot-62)-y 2 sin(ot -6z) AV/m. Find a) The direction of wave propagating. b) εr and a. c) E(z,t). 10. The electric field component of an electromagnetic wave in free-space is given by E.z,t)Eocos(ay)sin wt -kx) V/rm (Hint: Use the identity 2 sin a cos b (sina+ b) +sin(a -b)) a) Find...
A UPEMW propagating in an infinite lossless dielectric medium has the following instantaneous expression for its magnetic field component: H(r,t) = -iy2 sin(6π x 108t - 20πz + 300), A/m. Find: the frequency f of the wave in Hz the wavelength λ of the wave in m the phase velocity vph of the wave the group velocity vg of the wave the relative refractive index nr of the dielectric medium the unit vectors iE, iHand ik the phasor expression for...
The electric field intensity in a dielectric medium (u = H0, ε = ε0εr,) is given by E = 150 cos(109t + 8x) az V/m Calculate: (a) The dielectric constant, εr(b) The intrinsic impedance (c) The velocity of propagation (d) The magnetic field intensity vector, H (e) The Poynting vector (phasor form is also OK)
2. An electromagnetic wave travels through a material with n = 173.21 + j100 at a certain frequency. The magnetic field component is given by: H = 0.1e-0.0577x cos(wt -0.1x) ay A/m a) (10%) Find the electric field component. b) (5%) Find the loss tangent. c) (5%) Determine whether the material is a lossless dielectric, lossy dielectric, a good conductor, or free space.
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We have that the instantaneous magnetic field H of a wave propagating in 5. lossless linear, homogeneous, isotropic, (LHI) material that is charge free, non-magnetic Ho) and has a dielectric relative permittivity of e, The instantaneous representation of the magnetic field intensity is given as; H 25 cos(T x 10e + 0.5ry) uA/m (a) Is this wave a uniform plane wave? If so, explain which plane, and why, or wity not, is te wave uniform. Which direction...
8-16 Two nonmagnetic dielectrics( μ: 1 ) have the same dielectric constant( ε.-2.25 ), but different conductivities( σ-O and G-50 [S/m). If a wave of a frequency 100 MHz) propagates in each dielectric, compare the values of (a) β, (b) λ, and (c) up of the two waves. An electromagnetic plane wave propagating in a nonmagnetic dielectric has the instantaneous electric and magnetic field intensities given as 8-17 (z.t)- a,967.le" cos(1.5x10°t-Bz) and 'W(z, t) = ay 10e-az cos(1.5x10°t-Bz-0.7194) Determine (a)...