What is the correct relationship described by Ohm's Law?

Ohm's Law provides a fundamental relationship between voltage, current, and resistance in an electrical circuit. The law can be expressed in three different but equivalent forms, which allows us to rearrange the formula based on what information we have and what we need to find.

The first expression states that current equals voltage divided by resistance. This formulation allows us to determine how much current flows through a conductor given a specific voltage and resistance.

The second expression defines voltage as the product of current and resistance. This representation is useful when we want to calculate the voltage drop across a component when the current and resistance are known.

Lastly, the law also states that resistance equals voltage divided by current. This formulation enables us to calculate the resistance of a component if we have the voltage across it and the current flowing through it.

Since all these formulations arise from the same basic principle of Ohm's Law, they are indeed valid and interchangeable under different situations. Therefore, recognizing that each expression correctly describes the relationship defined by Ohm's Law supports the conclusion that all of these options effectively represent the relationship, making the answer comprehensive and inclusive.