SAT Subject Physics Practice Question 535: Answer and Explanation

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Question: 535

6. This question relates to the DC circuit shown below.

The values for current, voltage, and resistance in the circuit are graphed from point A through point G in the graphs directly below.

Which of the graphs shows the voltage from point A to point G?

A. A
B. B
C. C
D. D
E. E

Correct Answer: A


The correct answer is (A). The voltage measurement throughout the circuit decreases as the distance from point A increases and the number of resistors the current has passed through increases. Each increase in the resistance produces a corresponding decrease in voltage.

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