The formula to calculate the resistance of an LED circuit is:
\[ R = \frac{V_s - V_l}{I_L} \]
Where:
An LED resistor is defined as the total resistance in an LED circuit. It is used to limit the current through the LED to prevent it from burning out. By controlling the current, the resistor helps to ensure that the LED operates safely and efficiently.
Let's assume the following values:
Step 1: Subtract the voltage drop across the LED from the voltage of the source:
\[ 12 - 2 = 10 \text{ Volts} \]
Step 2: Divide the result by the current through the LED:
\[ \frac{10}{0.02} = 500 \text{ Ohms} \]
The Resistance (R) is 500 Ohms.
