A group of students measure entering a junction and leaving it

PHYSICS · Subjective · A Level · Physics · Measurements and their errors · Measurements and their errors

Problem

A group of students measure Iin=1.24 A±0.03 AI_{\text{in}}=1.24\,\text{A}\pm0.03\,\text{A} entering a junction and Iout=1.18 A±0.04 AI_{\text{out}}=1.18\,\text{A}\pm0.04\,\text{A} leaving it. Decide whether their data confirm Kirchhoff’s junction rule. State "confirmed" or "not confirmed" and justify your answer with a brief uncertainty comparison.

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