Field Strength to Power Density Calculator

Formula

The formula to calculate the Power Density (S) is:

\[ S = \frac{E^2}{2Z} \]

Where:

Field Strength (E): The measure of the force exerted by an electric field on a charged particle, typically measured in volts per meter (V/m).
Significance: Important in electromagnetics for describing the intensity of an electric field and determining the power density of the field.

Let's say the field strength (E) is 100 V/m and the impedance of free space (Z) is 377 Ω. Using the formula:

\[ S = \frac{100^2}{2 \times 377} \approx 13.27 \]

So, the Power Density (S) is approximately 13.27 W/m².