| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.23 |
| Score | 0% | 65% |
Why does current in an electric circuit create heat?
the wire in the circuit burns when current passes through |
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heat is created when the current overcomes resistance in the wire |
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current is naturally hot |
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voltage is naturally hot |
Current in an electric circuit creates heat when the current overcomes resistance in the wire.
Which of the following converts electrical energy into another form of energy in an electrical circuit?
AC source |
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DC source |
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load |
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wiring |
A load is a source of resistance that converts electrical energy into another form of energy. The components of a microwave, for example, are loads that work together to convert household electricity into radation that can be used to quickly cook food.
Which of the following is not a terminal on a transistor?
collector |
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base |
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input |
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emitter |
A transistor works by allowing a small amount of current applied at the base to control general current flow from collector to emitter through the transistor.
An engineer who wants to document an electric circuit would create which of the following?
a blueprint |
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a schematic |
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a matrix |
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a layout |
A schematic is the proper name for a drawing of an electric or electronic circuit.
What is the potential difference in an electrical circuit a measure of?
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 resistance 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.