Enter the total resistance of the resistor (ohms) and the total current running across the resistor (amps) into the calculator to determine the Resistor Voltage.

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## Resistor Voltage Formula

The following formula is used to calculate the Resistor Voltage.

RV = TR * TI

Variables:

- Where RV is the Resistor Voltage (Volts)
- TR is the total resistance of the resistor (ohms)
- TI is the total current running across the resistor (amps)

To calculate the resistor voltage, multiply the resistance by the current running across the resistor.

## How to Calculate Resistor Voltage?

The following two example problems outline the steps and information needed in order to calculate the Resistor Voltage.

**Example Problem #1:**

- First, determine the total resistance of the resistor (ohms). In this example, the total resistance of the resistor (ohms) is measured to be 15.
- Next, determine the total current running across the resistor (amps). For this problem, the total current running across the resistor (amps) is calculated to be 3.
- Finally, calculate the Resistor Voltage using the formula above:

RV = TR * TI

Inserting the values from above into the equation yields:

RV = 15* 3 = 45 (Volts)

**Example Problem #2: **

Using the same process as the first example, define the variables outlined by the formula. In this case, these values are:

total resistance of the resistor (ohms) = 16

total current running across the resistor (amps) = 4

Entering these values into the formula or calculator above gives us::

RV = 16 * 4 = 64 (Volts)