| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.43 |
| Score | 0% | 69% |
Which of these materials is not a good conductor of electricity?
air |
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tin |
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gold |
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copper |
All conductors have resistance and the amount of resistance varies with the element. In general, metals make the best conductors of electricity and non-metals make the worst conductors of electricity.
Which of the following is the preferred method for splicing wires?
soldering |
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wrap in small gauge wire |
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wire crimps |
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screw-on connectors |
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.
An amplifier is most similar in function to which of the following:
transistor |
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step-down transformer |
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step-up transformer |
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capacitor |
An amplifier is a device that takes a small input signal and creates a larger output signal. This makes it most similar to a step-up transformer which takes a smaller input voltage and creates a larger output voltage.
Which of the following statements about electrical resistance is true?
the more resistive the conductor is the slower electron flow will be |
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the more resistive the conductor is the faster electron flow will be |
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electrically conductive materials have no resistive properties |
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the less resistive the conductor is the slower electron flow will be |
Resistance is opposition to the flow of current. As resistance increases, current decreases as resistance and current are inversely proportional.
A diode to an electronic circuit is like a _______________ to a city?
traffic light |
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highway |
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one-way street |
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parking lot |
A diode allows current to pass easily in one direction and blocks current in the other direction.