| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.26 |
| Score | 0% | 65% |
The diameter of a number 12 wire is __________ the diameter of a number 6 wire?
double |
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more than |
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less than |
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triple |
The larger the number the smaller the diameter of the wire. So, the diameter of a number 12 wire is less than the diameter of a number 6 wire.
Which of the following is the preferred method for splicing wires?
wrap in small gauge wire |
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wire crimps |
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screw-on connectors |
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soldering |
Splicing is permanently joining two wires together. Splicing can be done with screw-on connectors or wire crimps but the preferred method for splicing is soldering. Soldering takes the most effort but results in a connection that is electrically and mechanically identical to the original wire.
The conductivity of an element depends on how many electrons occupy which electron shell?
middle |
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outer |
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inner |
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first |
All electricity is the movement of electrons which are subatomic particles that orbit the nucleus of an atom. Electrons occupy various energy levels called shells and how well an element enables the flow of electrons depends on how many electrons occupy its outer (valence) electron shell.
The valence shell of n insulator is how full of electrons?
half full |
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less than half full |
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more than half full |
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empty |
Insulators have valence shells that are more than half full of electrons and, as such, are tightly bound to the nucleus and difficult to move from one atom to another.
You would measure the amount of voltage between two points in a circuit with a(n):
battery |
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voltmeter |
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reostat |
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ammeter |
Voltage (V) is the electrical potential difference between two points. A voltmeter is used to measure the voltage between two points in a circuit.