Ohm's Law describes the relationship among which quantities?

• A. Voltage, Current, and Resistance
• B. Power, Voltage, and Resistance
• C. Current, Capacitance, and Inductance
• D. Voltage, Capacitance, and Inductance

Answer: (A)

Ohm's Law shows how voltage, current, and resistance are connected. It’s written as V = I × R, meaning the voltage across a component equals the current through it times its resistance. This relationship lets you find any one of the three if you know the other two; with a fixed resistance, current scales linearly with voltage.

The set that includes voltage, current, and resistance matches this fundamental link. Power, while related by P = V × I, is a consequence of Ohm’s Law rather than the defining relationship itself. Capacitance and inductance describe reactive elements and enter circuit behavior in different ways (often with impedance in AC analysis), but they aren’t part of the basic V–I–R relationship.