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In Physics / College | 2025-07-07

How are current and resistance related when the voltage of a circuit is constant?
A. The current doubles when the resistance doubles because they are directly proportional.
B. The current doubles when the resistance doubles because they are inversely proportional.
C. The current is cut in half when the resistance doubles because they are directly proportional.
D. The current is cut in half when the resistance doubles because they are inversely proportional.

Asked by 8igDino

Answer (2)

When voltage is constant, according to Ohm's Law, current and resistance are inversely proportional; doubling resistance halves the current. An example shows that doubling resistance from 5 ohms to 10 ohms results in the current decreasing from 2A to 1A. Thus, the correct answer is that the current is cut in half when the resistance doubles because they are inversely proportional. ;

Answered by GinnyAnswer | 2025-07-08

When the voltage is constant, current is inversely proportional to resistance, meaning that when resistance doubles, current is halved. This demonstrates Ohm's Law, which states I = R V ​ . Therefore, the chosen answer is option D.
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Answered by Anonymous | 2025-08-23

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