Which set of equations defines Ohm's law and electrical power in a DC circuit?

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Multiple Choice

Which set of equations defines Ohm's law and electrical power in a DC circuit?

Explanation:
In a DC circuit, Ohm's law connects voltage, current, and resistance with V = I × R, and electrical power is the product of voltage and current, P = V × I. The best set uses V = I × R for Ohm’s law and P = V × I for power, which directly expresses both relationships. The other options mix up the voltage-current relationship (V = I/R or V = R/I), which is not correct, even if they pair with a valid power expression in some cases. Using the correct pair lets you derive V = I × R, I = V / R, and P = V × I consistently, such as P = I²R or P = V²/R as alternative forms.

In a DC circuit, Ohm's law connects voltage, current, and resistance with V = I × R, and electrical power is the product of voltage and current, P = V × I. The best set uses V = I × R for Ohm’s law and P = V × I for power, which directly expresses both relationships. The other options mix up the voltage-current relationship (V = I/R or V = R/I), which is not correct, even if they pair with a valid power expression in some cases. Using the correct pair lets you derive V = I × R, I = V / R, and P = V × I consistently, such as P = I²R or P = V²/R as alternative forms.

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