electrical_services

Ohm's Law Calculator

V = I × R — Enter any two values to calculate the third.

Enter any two values. The third will be calculated.

Voltage (V)

Current (A)

Resistance (Ω)

V = I × R

Power (W)

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Energy (kWh/hr)

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Formulas

V = I × R

I = V / R

R = V / I

P = V × I

P = I² × R

P = V² / R