Lab Instrumentation — question 7 of 10
Write a real answer. It is graded against the question's rubric, and the mastery movement is computed by the same engine the product uses. Scoring here is deterministic rather than model-written, so this page costs nothing to run and nothing is saved. In a track built from your own posting, the same rubric is graded by the model, which is what produces feedback about your reasoning rather than about coverage.
Your DMM's datasheet specifies accuracy of plus or minus (0.05% of reading + 3 counts) on the 6V range, where the display resolution on that range is 0.1 mV (a 4.5-digit display). You measure a supply rail and the display reads 3.3000 V. What is the absolute uncertainty in millivolts, and how many of the displayed digits are actually meaningful?
This one resolves to a number. Give the value in the field below and your reasoning in the box — the number is checked exactly, by arithmetic.