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OpenSpecEngineering

Open data for a field built on precision

Ohm's Law & Power

The classic "power wheel" — V = IR and P = VI (with the equivalent forms P = I²R and P = V²/R). Pick which two quantities you know and solve for the rest.

R V I V = IR P = VI = I²R = V²/R
Simple resistive circuit: source V drives current I through resistance R.

Solution

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