Enter the total current moving through the resistor and the total resistance into the calculator to determine the power dissipation.

## Power Dissipation Formula

The following formula is used to calculated the total power dissipated by a resistor.

p = i^{2} * R

- Where p is the dissipated power (W)
- I is the current moving through the resistor (amps)
- R is the total resistance (ohms)

## FAQ

**What is power dissipation?**

Power dissipation is the total reduction in power that occurs due to a resistance to the flow of electricity. In most cases this resistance comes in the form of a resistor.

## Example

How to calculate power dissipation?

**First, determine the resistance.**Measure the total equivalent resistance of the resistor or circuit.

**Next, determine the current.**Measure the current flow through the circuit or resistor.

**Finally, calculated the dissipated power.**Using the resistance and current, along with the formula, calculate the total dissipated power.

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