# Current, voltage, and what they measure

Understand that electric current is the rate of flow of charge (measured in amperes using an ammeter), and that potential difference (voltage) is the energy transferred per unit charge (measured in volts using a voltmeter)

Builds on: Circuit vocabulary (hard, https://ai.page/c/circuit-vocabulary/en.md), Drawing circuits with proper symbols (hard, https://ai.page/c/drawing-circuits-with-proper-symbols/en.md), More batteries, brighter bulb (hard, https://ai.page/c/more-batteries-brighter-bulb/en.md)

Concept id: current-voltage-and-what-they-measure. Subject: science. Licence: CC BY-SA 4.0.

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