Which statement best describes Ohm's Law?

Ohm's Law is a fundamental principle in electrical engineering that describes the relationship between voltage, current, and resistance in a circuit. The correct statement asserts that voltage equals current times resistance. This relationship is typically expressed with the formula ( V = IR ), where ( V ) is voltage, ( I ) is the current flowing through the circuit, and ( R ) is the resistance.

Understanding this relationship is crucial because it allows engineers and technicians to analyze and design electrical circuits effectively. For instance, if you know the current flowing through a resistor and its resistance, you can easily calculate the voltage across that resistor. This principle is essential for troubleshooting and optimizing electrical systems, ensuring they operate safely and efficiently.

The other statements do not accurately capture Ohm's Law. For example, one suggestion implies voltage is derived from power and current, which misrepresents the direct relationship that Ohm's Law outlines. Recognizing the specific roles of voltage, current, and resistance helps in grasping the foundational concepts of circuit analysis and design.