How Is Electric Field Amplitude Related to Power in Electromagnetic Waves?

AI Thread Summary
The discussion focuses on the relationship between electric field amplitude and power in electromagnetic waves, specifically in the context of high-voltage transmission lines. The user seeks assistance in calculating the required electric field amplitude to transmit power equivalent to that handled by modern lines, which operate at 500 kV and 1000 A, over a cross-sectional area of 100 m². Key equations mentioned include P=IA for power and E=cB for the relationship between electric and magnetic fields. The user provides links to resources that may aid in understanding the concepts. The inquiry highlights the need for clarity on how electric field amplitude directly influences power transmission efficiency.
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Hi I am having trouble relating power to the electric field amplitude, I know that P=IA and E=cB, could someone please help? The problem reads:

What electric-field amplitude is required to transmit an amount of power equal to that handled by modern transmission lines (that carry voltages and currents of 500 kV and 1000 A)? Suppose power is to be transmitted in a beam of cross-sectional area 100m^2.
 
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