What is Ohm's Law?

Ohm's Law is a fundamental principle in electrical engineering and physics that establishes a relationship between voltage, current, and resistance in an electrical circuit. The law states that the voltage (V) across a conductor is directly proportional to the current (I) flowing through it, with the resistance (R) being the proportionality constant. This relationship can be mathematically expressed by the formula V = I × R.

This formula highlights that if you know any two of these values (voltage, current, or resistance), you can calculate the third. This is crucial for analyzing and designing electrical circuits, ensuring they operate safely and effectively.

Other options touch on concepts related to electrical engineering but do not represent Ohm's Law itself. The first option limits the law to only electrical resistance, which is not correct as Ohm's Law encompasses the relationship involving voltage and current as well. The third option pertains solely to electrical power calculations, which involve other variables and do not specifically define Ohm's Law. Lastly, the fourth option deals with capacitance, which is a different area of study in electronics unrelated to Ohm's Law. Understanding the comprehensive nature of Ohm's Law helps in troubleshooting circuits and applying principles effectively in various electrical applications.