Ohm's law and the electrical power equation
Connect V=IR with P=VI, derive every two-known-value formula, and keep each quantity tied to the same ideal resistive element.
Read guideElectrical formulas with boundaries
Ohm's law guides with the model boundary visible
Three guides explain the equations, exact SI prefixes, and what ideal resistive arithmetic cannot certify.
Electrical SI prefixes without factor-of-one-thousand mistakes
Normalize millivolts, microamps, kilo-ohms, and megawatts before applying the formula, then choose a readable display unit.
Read guideWhat an ideal resistive calculation proves—and what it does not
Separate exact arithmetic at one operating point from component ratings, reactive behaviour, transients, tolerances, and electrical safety.
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