electromagnetic waves

The electric field of a monochromatic plane wave travelling in a lossless isotropic and homogenous medium is given by $\vec{E}(z,t) = E_0[\hat{x}cos(\omega t - kz) + \hat{y}sin(\om...

A uniform plane wave with electric field $\vec{E}(x) = A_y\hat{a}_y e^{-j\frac{2\pi x}{3}}$ V/m is travelling in the air (relative permittivity, $\epsilon_r = 1$ and relative perme...

The electric field of a plane electromagnetic wave is $E = a_xC_{1x} \cos(\omega t – \beta z) + a_yC_{1y} \cos(\omega t – \beta z + \theta)$ V/m. Which of the following combination...

The electric field of an electromagnetic wave propagating in the positive z-direction is given by $$$E = {\widehat a_x}\sin \left( {\omega t - \beta z} \right) + {\widehat a_y}\sin...

If the electric field intensity associated with a uniform plane electromagnetic wave traveling in a perfect dielectric medium is given by $$E\left( {z,\,t} \right) = \,10\,\cos \le...

A medium has breakdown strength of $$16$$ KV/m r.m.s. Its relative permeability is $$1.0$$ and relative permittivity is $$4.0$$. A plane electromagnetic wave is transmitted through...

Two dipoles are so fed and oriented in free space that they produce the following electromagnetic waves: $$${E_x} = 10\,{e^{j\left( {\omega t - z\pi /3} \right)}}\,\,volts/metre$$$...

A plane electromagnetic wave traveling along the +z-direction, has its electric field given by E x = 2 cos $$\left( {\omega t} \right)$$ and E y = 2 cos $$\left( {\omega t + {{90}^...

For an electromagnetic wave incident from one medium to a second medium, total reflection takes place when