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AP® Physics 1 & 2

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Moderate

From Big Potential to Little Potential

APPH12-DK59RZ

The circuit shown below consists of a battery of negligible internal resistance and two resistors,
(${R}_{1}=\text{14 Ohms and } {R}_{2}=\text{23 Ohms}$). The resistance of the connecting wires is also negligible.

The potential difference between two points in the circuit is measured at four different locations. They are:

  • Between points W and X; where the potential difference will be known as ($\Delta{V}_{WX}$).
  • Between points X and Y; where the potential difference will be known as ($\Delta{V}_{XY}$).
  • Between points Y and Z; where the potential difference will be known as ($\Delta{V}_{YZ}$).
  • Between points Z and W; where the potential difference will be known as ($\Delta{V}_{ZW}$).

Created for Albert.io. Copyright 2016. All right reserved.

Which of the following choices correctly identifies the absolute value of the measured $\Delta{V}$'s in descending order?

A

$\Delta{V}_{WX}=\Delta{V}_{XY}=\Delta{V}_{YZ}=\Delta{V}_{ZW}$

B

$\Delta{V}_{WX}>\Delta{V}_{XY}>\Delta{V}_{YZ}=\Delta{V}_{ZW}$

C

$\Delta{V}_{XY}>\Delta{V}_{WX}>\Delta{V}_{YZ}=\Delta{V}_{ZW}$

D

$\Delta{V}_{ZW}>\Delta{V}_{XY}>\Delta{V}_{WX}>\Delta{V}_{YZ}$