In a circuit, what does Ohm's law state?

Ohm's Law states that the voltage across a conductor is directly proportional to the current flowing through it, with the resistance of the conductor being the constant of proportionality. This relationship is expressed by the formula Voltage (V) = Current (I) × Resistance (R).

In simpler terms, if you know the current flowing through a circuit and the resistance in that circuit, you can calculate the voltage by multiplying these two values. This fundamental principle is critical in electrical engineering and HVACR applications, where understanding how voltage, current, and resistance interact can lead to safer and more efficient designs and troubleshooting.

In this case, the correct option outlines this relationship accurately, ensuring clarity on how the quantities are interrelated in a straightforward manner.