| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.51 |
| Score | 0% | 70% |
What is the potential difference in an electrical circuit a measure of?
the resistance at a specific location in the circuit |
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the current at a specific location in the circuit |
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the voltage at a specific location in the circuit |
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the load at a specific location in the circuit |
Electrons flow from an area of high concentration to an area of low concentration. A high voltage indicates a high concentration of electrons that creates a greater potential for electron flow than a low voltage. When applied to a load, voltage creates electricity and potential difference is the measure of voltage at a specific location in an electrical circuit.
A diode to an electronic circuit is like a _______________ to a city?
highway |
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traffic light |
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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.
Which of these materials is not a good conductor of electricity?
tin |
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air |
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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.
An amplifier is most similar in function to which of the following:
transistor |
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step-down transformer |
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capacitor |
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step-up transformer |
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.
The hertz is a unit of measurement for:
power |
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energy |
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inductance |
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frequency |
The hertz is a unit of measurement for frequency.