What does Ohm's Law express mathematically?

Ohm's Law is a fundamental principle in electrical engineering and physics that describes the relationship between voltage, current, and resistance in an electrical circuit. Mathematically, it is expressed as V = IR, where V represents the voltage (in volts), I represents the current (in amperes), and R represents the resistance (in ohms).

This law indicates that the voltage across a conductor is directly proportional to the current flowing through it when the temperature remains constant. The proportionality constant in this relationship is the resistance of the conductor. Understanding Ohm's Law is crucial for calculating the behavior of electrical circuits, as it allows for the determination of one of the three variables if the other two are known.

The other choices do not accurately reflect this essential relationship defined by Ohm's Law. One option incorrectly adds the values instead of relating them through multiplication, while others misrepresent the mathematical operations or variables involved.