Online calculator for calculating the values on a loaded voltage divider
This function calculates voltages, currents and resistances on a loaded voltage divider.
The values of the voltage U_{2} or the load resistance R_{3} can be specified at the output of the circuit. The input of the voltage U_{2} is preset.

The voltage divider is a series circuit made up of two resistors that divide an electrical voltage. When the voltage divider is loaded, a further resistor (load resistor) is connected in parallel to the second resistor. The ratio of the partial voltages corresponds to the ratio of the resistors R_{1} and the resistance of the parallel connection of (R_{2} and R_{L}).
For the calculation, the total resistance of R_{2} and R_{L} must therefore first be calculated using the following formula:
\(\displaystyle U_{2L}=\frac{R_2·R_L}{R_2+R_L}\)
Then the voltage U_{2} is calculated according to the formula:
\(\displaystyle U_2=U· \frac{R_{2L}} {R_1+R_{2L}}\)
