# Power from Current and Voltage

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**Formula:**`P = current × voltage`

## Introduction to Power Calculation

Power is the rate at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt (W). One watt is equivalent to one joule per second. In electrical systems, power (P) can be calculated by multiplying the current (I) in amperes with the voltage (V) in volts.

## Parameter usage:

`current`

= the flow of electric charge in amperes`voltage`

= the electric potential difference in volts

## Example valid values:

`current`

= 5A`voltage`

= 230V

## Output:

`power`

= electrical power in watts

## Data validation

Both the current and voltage should be greater than zero to determine a positive power output.

## Summary

This calculator helps to determine the electrical power output when current and voltage are known, using the formula `P = I × V`

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Tags: Electrical, Power, Current, Voltage, Watts, Amperes, Volts