Ohm's Law for calculating voltage is __________.

Ohm's Law is fundamentally stated as the relationship between voltage (E), current (I), and resistance (R). The most well-known formula derived from Ohm's Law is E = I × R, which means that the voltage (E) across a conductor is equal to the current (I) flowing through it multiplied by the resistance (R) of the conductor. This formula is essential for understanding how electrical circuits operate, allowing for the determination of one variable when the other two are known.

The other choices involve varying elements of electrical calculations but do not represent Ohm's Law correctly. For instance, while the power (P) in a circuit can be related to voltage and current (as in P = E × I), it doesn’t change the definition of Ohm's Law itself, which specifically pertains to voltage, current, and resistance. Therefore, the correct understanding of Ohm's Law centers solely on the equation E = I × R. Understanding this relationship is critical for anyone engaged in electrical maintenance or any practical application involving electrical circuits.