In an electrical circuit where the voltage and resistance are known, which form of Ohm's law is used to find the circuit current?

The correct form of Ohm's law to find the circuit current when voltage and resistance are known is given by the formula I = V/R, where I represents the current, V represents the voltage, and R represents the resistance. This formula establishes a direct relationship between these three fundamental electrical quantities, illustrating how current varies directly with voltage and inversely with resistance.

Ohm's law is a foundational principle in electrical engineering and analysis. According to this law, when you know the voltage across a conductor and the resistance of that conductor, you can easily calculate the current flowing through it by dividing the voltage by the resistance.

The use of the alternative equation I = E/R provides the same calculation; however, E typically denotes electromotive force (similar to voltage), which adds confusion since it could imply a different application than simple voltage. The expression I = R/V is not aligned with Ohm's law as it suggests that current is directly proportional to resistance divided by voltage, which is not accurate. Finally, the equation I = V + R does not relate to Ohm's law at all, as it incorrectly combines voltage and resistance in a manner not reflective of the relationships defined by Ohm's law.

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