What does Ohm's Law state in the context of basic electrical theory?

What does Ohm's Law state in the context of basic electrical theory?

• A. Voltage and current are directly proportional
• B. Current equals voltage divided by resistance
• C. Power equals voltage times current
• D. Voltage equals current divided by resistance

Answer: (A)

Voltage and current are directly proportional when resistance is constant. Ohm's Law connects V, I, and R with V = I R, so as voltage rises, current rises in direct proportion if the resistance stays the same. This means doubling the voltage will double the current for the same resistor, keeping the ratio V to I equal to R. Describing the relationship as voltage and current being directly proportional captures that fundamental link. The form I = V / R is also correct, but the direct-proportionality view highlights the essential connection. The idea that voltage equals current divided by resistance would be incorrect, since the proper relation is V = I R. The statement that power equals voltage times current is true, but it describes power, not the basic current–voltage–resistance relationship.

Voltage and current are directly proportional when resistance is constant. Ohm's Law connects V, I, and R with V = I R, so as voltage rises, current rises in direct proportion if the resistance stays the same. This means doubling the voltage will double the current for the same resistor, keeping the ratio V to I equal to R. Describing the relationship as voltage and current being directly proportional captures that fundamental link. The form I = V / R is also correct, but the direct-proportionality view highlights the essential connection. The idea that voltage equals current divided by resistance would be incorrect, since the proper relation is V = I R. The statement that power equals voltage times current is true, but it describes power, not the basic current–voltage–resistance relationship.