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12 Cards in this Set
- Front
- Back
Name the three elements of an atom?
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Proton (+ charge)
Electron (- charge) Neutron (no charge) |
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Materials that are made up of Atoms whose Electrons are easily freed are called?
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"conductive materials" or "Conductors."
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Name two excellent Conductors of electricity and less expensive.
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Copper and Aluminum.
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Define "Insulators"
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Materials that have structural properties exactly opposite of Conductors. Atoms whose Electrons are not easily "freed." These Electrons are said to be tightly bound to the "nucleus" and are very stable.
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What is the measure of "electrical pressure" that causes current flow.
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"Voltage" or "Volts" is the measure of "electrical pressure" that causes current flow.
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What is sometimes referred to as the measure of a potential difference between two points along a Conductor.
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Voltage
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What is a measure of the rate of Electron flow through a material?
-It's symbol and unit? |
"Current" or I
Symbol: A Unit: Amps |
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Every Conductor offers some Resistance to current flowing in the form of?
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When Current flows in a Conductor, heat is produced.
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Resistance Elements essentially fall somewhere between a _____ and ________
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Resistance Elements essentially fall somewhere between a Conductor and an Insulator. Resistance can also be considered a measurement of how tightly a material holds onto its Electrons.
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A number of factors determine the Resistance to current flow such as Wire _______, Wire ______ and any impurities in the Wire's makeup.
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A number of factors determine the Resistance to current flow such as Wire diameter, Wire length and any impurities in the Wire's makeup.
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Define POWER?
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a "measure of the amount of work an electric current can accomplish in a specified period of time."
or Power is the rate at which electrical energy is converted into some other form of energy such as: light, heat, mechanical work, or horsepower. |
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Complete:
"For any electrical device, the higher its power rating in watts, ... |
....the greater its consumption of electrical energy (not necessarily the amount of work it produces).
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