Concepts

Electrical Measurements

Measure voltage, current and resistance safely with the right instrument.

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A multimeter measures voltage, current, resistance and more. Learn functions, ranges, burden voltage, accuracy, CAT ratings and...

Voltage is measured across two points in parallel. Learn AC and DC readings, RMS versus peak, meter loading, ground reference an...

Current is measured through a circuit, in series or with a clamp. Learn shunts, burden voltage, clamp meters, DC and AC current...

Every formula used here, with variable definitions, units, application conditions and a worked example.

Check your understanding with transparent calculators that show the formula and substitution.