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# AP Physics 1

### Vocabulary Chapter 19

TermDefinition
Ammeter A low-resistance device wired in series in an electric circuit , used to measure the current.
Circuit The complete path of an electric current including the source of the current and the resistors.
Direct Current (DC) An electric current that flows in only one direction
Electric Current The flow of electric charge, measured as the rate at which electric charge flows past a given point.
Electric Circuit A closed path in which an electric current can flow. The path must include a source of potential difference, and may include one or more resistors.
Equivalent Resistance A single resistance that is equivalent to a set of resistances in a series or parallel circuit.
Grounding The addition or removal of electrons to or from an object in order to neutralize its charge.
Kirchhoff's Law Conservation of charge: The sum entering any current junction is equal to the sum leaving that junction.
Parallel Circuit A circuit in which there is more than one current path.
Series Circuit A circuit in which there is only one current path.
Voltmeter A high-resistance device used to measure the potential difference across two points in an electric circuit.
Created by: BMcCormack

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