Ω
Ohm’s Law Calculator
Voltage, current or resistance from the other two, with the power the circuit dissipates.
Result…
How it's calculated
V = I × R I = V ÷ R R = V ÷ I P = V × I
Ohm’s law links the push (voltage), the flow (current) and what resists it (resistance) for a resistor at steady temperature. The power is what the resistance turns into heat. Lamps, diodes and motors are not simple resistors, so the law gives only a snapshot for them.
Your numbers, step by step
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