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23 Cards in this Set
- Front
- Back
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the structures that provide paths through which electricity travels
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electrical circuits
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a circuit in which there is a break in the wire so that current cannot flow
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open circuit
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a circuit in which the switch is turned to the "on" position, causing there to be no breaks anywhere in the wire
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closed circuit
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the diagramatic representation of an electric circuit
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circuit diagram
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simple symbols used in circuit diagrams
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electrical symbol
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either a positive or negative charge
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electric charge
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build up of either positive or negative charge
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static electricity
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the pushes and pulls that electric charges exert on each other
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electrical force
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an instrument that can detect and sometimes measure the amount of electric charges
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electroscope
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a unit used in measuring the amount of charge
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coulomb
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a device that uses chemical energy to move electrical charges
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battery
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the amount of potential energy that each unit of electrical charge has
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voltage
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the measurement unit for voltage
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volt
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the quantity that refers to the rate of flow of electric charges; measured in amps
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current
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the unit for measuring electrical current
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amperes (amp)
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an electric current that reverses its direction at repeated intervals
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alternating current (AC)
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electrical current flowing in one direction only
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direct current (DC)
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a material that conducts current easily
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conductor
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a material that conducts current poorly
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insulator
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a material that conducts current at a medium rate
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semiconductor
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the ability of a material to conduct current
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electrical conductivity
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the ability of an object to resist current
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resistance
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commonly used unit of meausurement for resistance
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ohm
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