Field Strength to Power Density Calculator

Calculate Power Density (S)



Formula

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

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

Where:

Definition

Example

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.

Extended information about "Field-Strength-to-Power-Density-Calculator"

Power Density Formula (Electric Field)

Definition: Power density is the amount of power (time rate of energy transfer) per unit volume.

Formula: \( S = \frac{E^2}{Z} \)

Example: \( S = \frac{100^2}{377} \)

Maximum Power Density Formula

Definition: The maximum power density is the highest amount of power per unit area.

Formula: \( S_{max} = \frac{P_{max}}{A} \)

Example: \( S_{max} = \frac{500}{2} \)

Electric Field Density Formula

Definition: Electric field density is the measure of the electric field strength per unit area.

Formula: \( D = \epsilon E \)

Example: \( D = 8.85 \times 10^{-12} \cdot 100 \)