Electricity
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22 Terms
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Chemical reactions
________ use up materials in primary cells as electrons flow from them, thus the cell can be permanently discharged.
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Ohmmeter
________: a device that is used to measure resistanceExamples: Lightweight carbon resistors are used in electronics.
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Temperature
________: Resistance increases when electrons bump into atoms as they move through a material.
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Insulator
________: a material that that does not allow the movement of electrons through it.
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Electrons
________ move back and forth, changing their direction.
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Electric charge
________ can be given to a neutral object by touching it with a charged object.
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Neutral objects
________: have an equal number of p+ and e-
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Lightweight carbon resistors
Ohmmeter: a device that is used to measure resistanceExamples: ________ are used in electronics.
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Resistor
________: a device that reduces the flow of electric current.
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strength of the electric force
The ________ is related to.
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Electrodes
________ are conductors- one is positively charged and the other is negatively charged.
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Heavier ceramic resistors
What are used in larger circuits? Answer with a single words or term.
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Thicker wires
________ have less internal resistance than thinner ones.
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Electrical Resistance
________: the ability of a material to oppose the flow of electric current; measured in ohms.
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Electric Cell
________: a device that converts chemical energy into electrical energy.
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Primary Cell
________: an electric cell that may only be used once.
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Wet Cells consist of metal conductors
________ placed in contact with a conducting liquid.
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Secondary Cell
________: an electric cell that can be rechargedTypes of Primary Cells.
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neutral object
The ________ has the OPPOSITE charge as the object that induced it.Charging by Friction.
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Primary cells
________ fall into 2 categories: dry cells and wet cells.
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neutral object
The ________ becomes temporarily charged (electrons move around)
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Neutral objects
What are attracted to charged objects Electric Charge? Answer with a single words or term.
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