22
QuizMultiple Choice

Lab: Magnetic and Electric Fields — Unit test

Question 22 • FL-2003310-Physical Science CR

How are the current and resistance related when the voltage of a circuit is constant?

Answer
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.

Explanation

Ohm’s law is I = V/R, where I is current, V is voltage, and R is resistance. When voltage stays constant, doubling resistance makes the current half as large. Therefore, current and resistance are inversely proportional, matching “The current is cut in half when the resistance doubles.”

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