A digital multimeter, set up as a...

Question 1 of 2707066636ef128f7522a1c5230c1

A digital multimeter, set up as a milliammeter on the 100 milliamp scale, is known to have an accuracy of plus or minus 2%. A meter reading of 5.0 milliamps would indicate an actual line current between what two values?

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Question 1 of 27070

🔍 Key Concepts

• Percentage error and how to apply it to a measured value • Difference between meter full-scale range (100 mA) and the actual reading (5.0 mA) • How to convert a percent of a value into a plus/minus range

💭 Think About

• Is the ±2% accuracy applied to the 100 mA scale value or to the 5.0 mA reading itself? Think carefully about what the question is implying. • How do you calculate 2% of the quantity it applies to, and then add/subtract that from the reading to find the minimum and maximum possible currents? • Once you find the total possible error in milliamps, which option’s range matches that spread around 5.0 mA?

✅ Before You Answer

• Be clear whether 2% of 5.0 mA is the same as 2% of 100 mA—this decision changes the error amount a lot. • Double-check your percent-to-decimal conversion (2% = 0.02). • After calculating the minimum and maximum values, verify that the midpoint of the range is 5.0 mA and that the width of the range matches your error calculation.