| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.32 |
| Score | 0% | 66% |
In an electronic circuit, a thermocouple can be used to:
increase or decrease the temperature of a component in the circuit |
|
open or close a circuit at a designated temperature |
|
keep the circuit at a designated safe temperature |
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link the temperature of one component in the circuit to that of another component in the circuit |
A thermocouple is a temperature sensor that consists of two wires made from different conductors. The junction of these two wires produces a voltage based on the temperature difference between them and can be used like a switch to open or close the circuit at a designated temperature.
| 9 Ω | |
| 2 Ω | |
| 10 Ω | |
| 20 Ω |
Ohm's law specifies the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit: V = IR.
Solved for resistance, R = \( \frac{V}{I} \) = \( \frac{20}{2} \) = 10 Ω
You would measure the amount of voltage between two points in a circuit with a(n):
voltmeter |
|
battery |
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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.
What is the voltage of most household electrical systems in the United States?
60V |
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110V |
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220V |
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60Hz |
Most households use electricity with a voltage of 110V.
Which of the following allows encapsulating complex circuit designs for easier integration into electronic devices and machines?
series-parallel circuits |
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parallel circuits |
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integrated circuits |
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series circuits |
Circuits containing transistors are packaged into integrated circuit chips that allow encapsulating complex circuit designs (CPU, memory, I/O) for easier integration into electronic devices and machines.