The formula to calculate the Power From Resistance (P) is:
\[ P = \frac{V^2}{Re} \]
Where:
Let's say the circuit voltage (V) is 12 volts and the equivalent resistance (Re) is 6 ohms. Using the formula:
\[ P = \frac{12^2}{6} = 24 \]
So, the Power From Resistance (P) is 24 watts.