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Ohm's law and power

The four-way relationship between voltage, current, resistance and power, and what it implies for part ratings and heat.

These calculators are in development. Below is what is being built for this category.

Coming next

Ohm's law solver: give any two of V, I, R, P and get the other twosoon
Resistor power rating and derating against ambient temperaturesoon
Energy and running cost over timesoon
Wire resistance from gauge, length and materialsoon
Voltage drop along a run of cablesoon