Which statement best describes Ohm's Law?

• A. Current is inversely proportional to voltage
• B. Voltage is proportional to resistance
• C. Current is proportional to voltage and inversely proportional to resistance
• D. Power is proportional to capacitance

Answer: (C)

Ohm's Law shows how current flows in a simple circuit based on voltage and resistance. It tells us that current equals voltage divided by resistance (I = V / R). That means, for a fixed resistance, increasing the voltage makes the current increase in direct proportion. Conversely, for a fixed voltage, increasing the resistance makes the current fall in inverse proportion. So describing current as proportional to voltage and inversely proportional to resistance captures both how current responds to voltage and how it responds to resistance.

The other ideas don’t fit this relationship: current isn’t inversely related to voltage, so that option misstates how current changes with voltage. Voltage isn’t simply proportional to resistance independent of current; it’s the product of current and resistance (V = I R), so voltage depends on both. And power’s relationship to capacitance isn’t part of Ohm’s Law for a simple resistor; capacitance governs reactive behavior and transient charging, not the direct steady-state I–V–R relationship.