Energy Carried by Electromagnetic Waves Video Lessons

Concept

# Problem: A college radio station has low power and it broadcasts 10 w of electromagnetic waves.Calculate the distance from the antenna for the electric field amplitude 2x10-3 V/m, the lower limit at which good reception is possible?Express your answer to two significant figures.

###### FREE Expert Solution

We are required to apply the relationship between intensity, power, and area.

$\overline{){\mathbf{I}}{\mathbf{=}}\frac{\mathbf{P}}{\mathbf{A}}}$

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###### Problem Details

A college radio station has low power and it broadcasts 10 w of electromagnetic waves.

Calculate the distance from the antenna for the electric field amplitude 2x10-3 V/m, the lower limit at which good reception is possible?