A student records the following potential differences (with polarities) around a…
PHYSICS · Subjective · A Level · Physics · Measurements and their errors · Measurements and their errors
Problem
A student records the following potential differences (with polarities) around a single closed loop containing a 9.000 V battery and three resistors: −2.910 V, +4.120 V, −6.115 V. The combined uncertainty in each reading is ±0.010 V. Evaluate whether these data satisfy energy conservation at the 95 % confidence level (use two standard deviations) and state your reasoning briefly.