electric current

closed circuit

A complete electrical circuit around which current flows or a signal circulates

electric circuit

A complete, unbroken path through which electric charges can flow

conductor

A device designed to transmit electricity, heat, etc.

switch

A device for making, breaking, or changing the connections in an electrical circuit.

battery

A device that produces electricity

circuit diagram

A drawing that traces the path that electron flow will take in an electronic circuit.

insulator

A material that does not allow heat or electrons to move through it easily.

electrical symbol

A simple symbol used to represent parts of a circuit in a circuit diagram

semiconductor

A substance that can conduct electricity under some conditions

ampere

A unit of measure of the rate of current flow. One ampere equals one coulomb per second.

resistor

An electrical device that resists the flow of electrical current

multimeter

An instrument for measuring the properties of an electrical circuit.

ohm's law

States that the direct current flowing in an electric circuit is directly proportional to the voltage applied to the circuit.

electric current

The continuous flow of electric charges through a material

electric resistance

The resistance of a material to the flow of electric current through it; measured in ohms.

voltage

an electric measurement unit

open circuit

an incomplete electrical circuit in which no current flows

voltage

the amount of volts flowing through a circuit