What formula represents Ohm's Law?

Prepare for the ATandamp;T Technical Knowledge (TKT) II Exam. Use flashcards and multiple-choice questions, each with hints and explanations. Excel on your test!

Ohm's Law establishes a fundamental relationship between voltage (V), current (I), and resistance (R) in an electrical circuit. The correct representation of Ohm's Law is expressed with the formula V = I x R, which indicates that voltage is equal to the current multiplied by the resistance.

In this formula, voltage is the potential difference that drives current through a circuit, current denotes the flow of electric charge, and resistance describes how much the flow is opposed. Understanding this relationship is crucial in circuit analysis, as it allows engineers and technicians to calculate how much voltage is required to achieve a desired current based on the known resistance in a circuit.

Other formulas provided do not accurately depict Ohm's Law. For instance, the formula V = I/R would incorrectly imply that voltage equals current divided by resistance, which does not correctly represent the relationship defined by Ohm's Law. Similarly, R = V/I rearranges the components accurately but is not the primary expression of the law. Lastly, P = V/I represents power (P) in terms of voltage and current but is unrelated to the specific components of Ohm's Law. Thus, the formula V = I x R is indeed the correct and widely recognized formulation of Ohm's Law

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