Meters and troubleshootingQuestion 737 of 1506

A 4-20 mA loop carries 8 mA. What percent of the measured range is this?

  1. 50 percent
  2. 25 percent
  3. 40 percent
  4. 8 percent
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Correct answer: 25 percent

8 mA is 4 mA above the 4 mA zero, over a 16 mA span: 4/16 = 25 percent.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 9.3: Current Signal Systems

Practice meters and troubleshooting

Questions last reviewed: 18 October 2026