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Master the ohm's law calculator with our comprehensive step-by-step guide, complete with examples, tips, and frequently asked questions.

Ohm's Law Calculator

Calculate voltage, current, resistance, and power relationships

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Ohm's Law Calculator — V=IR Voltage, Current & Resistance

Calculate voltage, current, resistance, and power using Ohm's Law

Voltage (V) - Volts

Current (I) - Amperes

Resistance (R) - Ohms

Power (P) - Watts

Enter any two values to calculate the remaining two. You can calculate voltage, current, resistance, and power using Ohm's Law formulas.