PHYSICS · Single correct · AP · Physics 2: Algebra-based · Electric Circuits · Electric Circuits
Problem
In a series circuit, a battery and three resistors are connected in a single loop. The measured potential differences are listed below.
• Battery: +18.0 V
• Resistor A: −4.0 V
• Resistor B: −5.8 V
• Resistor C: −8.3 V
Assuming the battery’s emf is known to be accurate, only one of the three resistor readings can be in error. Which corrected value would make the set of measurements consistent with energy conservation in the loop?
(a) Change Resistor A’s reading to −4.1 V
(b) Change Resistor B’s reading to −6.4 V
(c) Change Resistor C’s reading to −8.2 V
(d) Change Resistor C’s reading to −8.0 V