Question
Download Solution PDFWhich of the following instruments typically has the highest resolution?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is: 1) Digital multimeter
Explanation:
Resolution in Measurement Instruments
Resolution refers to the smallest change in a measured quantity that an instrument can detect and display.
Comparison of Instruments:
| Instrument | Typical Resolution | Key Notes |
|---|---|---|
| Digital Multimeter (DMM) | 0.1 μV to 1 mV (e.g., 6½-digit DMM can resolve 1 μV on a 1 V range) | Highest resolution due to precision analog-to-digital conversion and specialized circuitry. |
| Oscilloscope | 1 mV to 10 mV (vertical scale) | Optimized for speed, not ultra-fine voltage resolution. |
| Digital Thermometer | 0.1°C (for standard models) | Limited by sensor (e.g., thermocouple/RTD) and ADC resolution. |
| Analog Voltmeter | 1% of full scale (e.g., 10 mV on a 1 V scale) | Limited by parallax errors and mechanical movement. |
Last updated on Jun 7, 2025
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