| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.20 |
| Score | 0% | 64% |
You would measure the amount of voltage between two points in a circuit with a(n):
battery |
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voltmeter |
|
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.
| orthogonal | |
| perpendicular | |
| series | |
| series-parallel |
Connecting the 8 batteries in series multiplies their voltage while keeping their current the same yielding a 120V 25A configuration. Connecting the 8 batteries in parallel multiplies their current while keeping their voltage the same yieleding a 15V 200A configuration. Using a series-parallel connection, 4 batteries can be connected in series and 4 can be connected in parallel resulting in a 60V 100A configuration.
A diode to an electronic circuit is like a _______________ to a city?
one-way street |
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parking lot |
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traffic light |
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highway |
A diode allows current to pass easily in one direction and blocks current in the other direction.
A __________ electric current produces a magnetic field proportional to the amount of current flow.
moving |
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high voltage |
|
low voltage |
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stationary |
A moving electric current produces a magnetic field proportional to the amount of current flow. This magnetic field can be made stronger by winding the wire into a coil and further enhanced if done around an iron containing (ferrous) core.
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 |
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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.