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SAT® Subject Test in Physics

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Difficult

Broken Circuit Potential Difference

SATPHY-GY1VKY

The circuit below shows 5 resistors and two batteries with values labeled. Points $A$ and $B$ are at the end of "loose" wires–not connected to anything. For the batteries, the longer line segment is the positive side.

What is the potential difference between points $A$ and $B$?

A

$–5 \,V$

B

$–10\, V$

C

$–15\, V$

D

$–20 \,V$

E

$–25\, V$