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Understanding the relationship between current, voltage, and resistance is pivotal for electrical calculations. Ohm's Law provides three core formulas to make these calculations easier:
Voltage (V) = Current (I) × Resistance (R)
Current (I) = Voltage (V) / Resistance (R)
Resistance (R) = Voltage (V) / Current (I)
Note: Ohm's Law is generally applicable for resistive circuits. For circuits with inductors and capacitors, additional laws and formulas may apply.