- #1
ashleyd
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Homework Statement
Instead of sending power by a 850 kV, 1100 A transmission line, one desires to beam this energy via an electromagnetic wave. The beam has uniform intensity within a cross-sectional area of 80 m2. The speed of light is 3×10^8 m/s and the permeability of free space is 4×10^-7 T · m/A.
Find the rms value of the electric field.
Answer in units of kV/m
Homework Equations
P=IV
poynting vector = S = EB/mu0
Not sure if the following equations are relevant:
Power = I/Area
S=(E^2)/mu0*c
The Attempt at a Solution
I have tried using the formulas above, along with changing the kv to v
the answers i have gotten through this that are incorrect include:
18774.62904
593705.9
2099.06734
66378.33756