Bennett Mechanical Comprehension Practice Test 2026 - Free Practice Questions and Review Guide

Question: 1 / 400

What is the correct expression for Ohm's Law in terms of voltage (V)?

V = I/R

V = PR

V = I * R

Ohm's Law states the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit. The correct expression, V = I * R, indicates that the voltage across a conductor is directly proportional to the current flowing through it when the resistance is constant. This means that if you increase the current, the voltage across the component will also increase, provided the resistance does not change.

Understanding this relationship is crucial in electrical engineering and physics, as it allows for the calculation of one variable if the other two are known. For instance, if you know the amount of current flowing and the resistance of a circuit, you can easily calculate the voltage. This foundational principle is essential for analyzing electrical circuits and designing electronic systems.

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V = R/I

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