Calculate or simplify your voltage analysis tasks with this Voltage Drop Across Resistor Calculator Tool, providing instant, reliable results for every all possible resistor combination. Useful in assisting assignments works.
VOLTAGE DROP ACROSS RESISTOR CALCULATOR
Enter the following values and press Calculate to find the voltage drop:
Vin- Input Voltage – This is the main Supply Voltage. R1-R2 are the resistor in series with power source.
Output Voltage – This is the calculated Output Voltage across each resistor.
For manual calculation, You can use the below formulas applicable 2 resistors in series or just derive from ohms law V=IR
V1 = (R1 / (R1 + R2)) x V
V2 = (R2 / (R1 + R2)) x V
whereas, V is the Source voltage, R1 and R2 are the two resistors across which V1 and V2 are the voltages drop on each resistors respectively.
Also, for 3 resistor setup you can directly use below formula:
V1 = (R1 / (R1 + R2 + R3)) x V
V2 = (R2 / (R1 + R2 + R3)) x V
V3 = (R3 / (R1 + R2 + R3)) x V
whereas, R1, R2 and R3 are the resistors across which V1, V2 and V3 are the voltages drop on each resistors respectively.
