# Voltage Drop Across a Resistor Calculator

A Voltage divider calculator calculates the voltage drops on each resistor load, when connected in series. Enter the total voltage supply, Resistance of first load, second load and third load and click calculate. You will get the results of voltage drops in volts. Make use of the below simple voltage drop across resistor calculator to get the voltage drop values.

A Voltage divider calculator calculates the voltage drops on each resistor load, when connected in series. Enter the total voltage supply, Resistance of first load, second load and third load and click calculate. You will get the results of voltage drops in volts. Make use of the below simple voltage drop across resistor calculator to get the voltage drop values.

Code to add this calci to your website

#### Formula:

V_{i} = V_{T} (R_{i} / R_{1} + R_{2} + R_{3} + ..)
**Where,**
V_{i} = Voltage Drop
R_{1} = Resistance of Resistor R_{1}
R_{2} = Resistance of Resistor R_{2}
R_{3} = Resistance of Resistor R_{3}
R_{i} = Resistance of Resistor R_{i}
V_{T} = Total Voltage

#### Example

**The voltage drop across each resistor with total voltage of 12 V and resistances 5, 8 and 2 can be calculated as **

V_{1} = 12 (5 / 5 + 8 + 2)

V1 = 4

V_{2} = 12 (8 / 5 + 8 + 2)

V2 = 6.4

V_{3} = 12 (2 / 5 + 8 + 2)

V3 = 1.6