What does Ohm's Law express about electric current?

Ohm's Law defines the relationship between electric current, voltage, and resistance in an electrical circuit. 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 can be mathematically represented by the formula I = V/R.

Understanding this law is fundamental in electrical engineering and physics, as it helps predict how electrical circuits will behave under varying conditions. It allows us to calculate how much current will flow given a specific voltage and resistance, which is crucial for designing circuits and troubleshooting electrical systems. Other options, while related to different areas of physics, do not pertain to the fundamental principles of electric current as described by Ohm's Law.