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## Related Tools

- Voltage & resistance to power (DC)
- Power & voltage to resistance (DC)
- Power & current to voltage (DC)
- Current & resistance to voltage (DC)
- Power & resistance to current (DC)

## User Guide

Use this calculator to determine the voltage in microvolt, millivolt, volt or kilovolt units, generated by a direct current (DC) electrical circuit for a specified power and resistance. Two conversion scales show how the voltage will vary when the power or resistance is changed independently, whilst the other remains fixed with the entered value.

### Formula

The formula used by this calculator to determine the DC voltage from the power and resistance of the circuit is:

V = √ (P · R)

#### Symbols

- V = Voltage (DC)
- P = Electrical power (DC)
- R = Resistance (DC)

### Power (P)

This is the electrical power generated in a DC electrical circuit.

### Resistance (R)

This is the electrical resistance of the DC electrical circuit

### Voltage (V)

This is the DC voltage or electrical potential difference applied to or generated by the electrical circuit with the entered values for current and resistance