Nate Core Practice Test

Which of the following describes the relationship between voltage, current, and resistance?

1. Ohm's Law

2. Faraday's Law

3. Kirchhoff's Law

4. Newton's Law

The correct answer is: Ohm's Law

The relationship between voltage, current, and resistance is succinctly captured by Ohm's Law, which states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance of the conductor. This fundamental principle can be mathematically expressed as V = IR, where V stands for voltage, I for current, and R for resistance. Ohm's Law is essential for understanding how electrical circuits operate, as it allows for the calculation of one of these three variables if the other two are known. This concept is vital in both theoretical and applied electrical engineering, providing foundational knowledge necessary for analyzing and designing electrical systems. The other laws mentioned serve different purposes in the field of physics and electrical engineering. Faraday's Law relates to electromagnetic induction, Kirchhoff's Law deals with the conservation of charge and energy in electrical circuits, and Newton's Law describes motion and forces, which do not pertain to electrical parameters like voltage, current, and resistance. Thus, Ohm's Law is the correct choice to describe the specific relationship among these three electrical quantities.