Measuring instruments
Electrical Technology · Grade 10 · about 40 minutes
How a coil-based (moving-coil) meter works using electromagnetism, how shunts and multipliers extend its range to make ammeters and voltmeters, how instruments are calibrated, how to select the right scale, and why measuring instruments matter.
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- 6 sections of explanation, worked examples and diagrams
- 1 practice task with hints and worked answers
- A quiz that marks itself as you go
- Your progress kept across every subject you take
Other lessons in this sub-strand
- Measuring instruments
- The moving-coil movement
- Analogue and digital meters
- The ammeter
- Computing a shunt for an ammeter
- The voltmeter
- Computing a multiplier for a voltmeter
- The ohmmeter
- The multimeter
- Selecting a suitable scale and range
- Connecting meters in the workshop
- Calibrating coil-based instruments
- Measuring voltage, current and resistance
- Why measuring instruments matter