| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.39 |
| Score | 0% | 68% |
You would measure the amount of voltage between two points in a circuit with a(n):
reostat |
|
voltmeter |
|
ammeter |
|
battery |
Voltage (V) is the electrical potential difference between two points. A voltmeter is used to measure the voltage between two points in a circuit.
The joule is a unit of measurement for:
energy |
|
capacitance |
|
power |
|
resistance |
The joule is a unit of measurement for energy.
Which of the following allows DC to pass easily but resists the flow of AC?
transformer |
|
inductor |
|
capacitor |
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semiconductor |
An inductor is coiled wire that stores electric energy in the form of magnetic energy and resists changes in the electric current flowing through it. If current is increasing, the inductor produces a voltage that slows the increase and, if current is decreasing, the magnetic energy in the coil opposes the decrease to keep the current flowing longer. In contrast to capacitors, inductors allow DC to pass easily but resist the flow of AC.
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 |
|
highway |
A diode allows current to pass easily in one direction and blocks current in the other direction.
| series-parallel | |
| series | |
| parallel | |
| perpendicular |
Connecting the 10 batteries in series multiplies their voltage while keeping their current the same yielding a 90V 20A configuration. Connecting the 10 batteries in parallel multiplies their current while keeping their voltage the same yieleding a 9V 200A configuration. Using a series-parallel connection, 5 batteries can be connected in series and 5 can be connected in parallel resulting in a 45V 100A configuration.