Which equation represents Ohm's Law?

Ohm's Law is a fundamental principle in electrical engineering that relates voltage, current, and resistance. It states that the current (I) flowing through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R) of the conductor. This relationship is mathematically represented by the equation V = I × R.

In this equation, if you know any two of the quantities—voltage, current, or resistance—you can calculate the third. For instance, if the voltage is known along with the resistance, you can determine the current. This is essential for understanding how electrical circuits operate and for troubleshooting issues in HVAC systems and other electrical applications.

The other equation choices do not accurately represent Ohm's Law as they misrepresent the relationships between these electrical quantities, making them inapplicable in this context.