What is Ohm's Law expressed in formula form?

Ohm's Law is a fundamental principle in electrical engineering that defines the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit. The correct formula, V = IR, states that the voltage across a conductor is directly proportional to the current flowing through it and inversely proportional to the resistance. This means that if you increase the current while keeping the resistance constant, the voltage will also increase. Conversely, if the resistance increases while keeping the current constant, the voltage will drop.

Understanding Ohm's Law is essential for analyzing and designing electrical circuits, as it allows engineers to calculate voltage, current, and resistance values when given any two of these quantities. This relationship is fundamental to both AC and DC circuits, making it widely applicable across various electrical applications. The clarity and simplicity of the formula V = IR facilitate effective problem-solving in electrical engineering contexts.