Ohm's law and DC power
Find voltage, current, resistance and power in a resistive circuit from two independent quantities.
Inputs
Calculations run in your browser. Your input values are not submitted or saved.
Results
- Voltage
- 24 V
- Current
- 0.5 A
- Resistance
- 48 Ω
- Power
- 12 W
Quantities are positive and apply to resistive circuits; AC loads require power factor to be considered separately.
Formula & guidance
V=IR; P=VI
Quantities are positive and apply to resistive circuits; AC loads require power factor to be considered separately.
Change the example inputs and check each field’s units. Use equipment datasheets and applicable project standards for final decisions. Results do not establish Canadian electrical-code compliance or certify a design.