- #1

zak8000

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## Homework Statement

hi i have been given the following electric field phasor E=(z(5)+x(10))e-jpi(y) mV/m

Mr=100

e

_{r}=3

## Homework Equations

## The Attempt at a Solution

i have been able to deduce from the results above that wave is traveling in positive y direction.

intrinsic impedance = 2176 ohms from n=sqrt(M/e)

wave velocity =17x10^6 ms-1 from v=1/sqrt(M*e)

wavelength =2pi/k=2

angular frequency=kv=17pi*10^6

so to find instanteous expression for E it should be of the form:

E(y,t)=Acos(wt-ky)

E(y,t)=(z(5)+x(10))cos(17pi*10^6*t-pi*y) is this correct ? i am just confused because there are two component is the amplitude. so is this valid?

and also for the corresponding magnetic field

H=(x(5/2176)-z(10/2176))e-jpi(y) mA/m

H(y,t)=(x(5/2176)-z(10/2176))cos(17pi*10^6*t-pi*y) is this an correct expression for the corresponing magnetic field in instantaneous form?