| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.13 |
| Score | 0% | 63% |
The rate of flow of electrons per unit time is which of the following?
resistance |
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current |
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voltage |
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conductance |
Current is the rate of flow of electrons per unit time and is measured in amperes (A). A coulomb (C) is the quantity of electricity conveyed in one second by a current of one ampere.
Which of the following will increase the magnetic field produced by the electric current in a wire?
wrap the wire around a ceramic core |
|
construct the wire from insulative material |
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wind the wire into a coil |
|
construct the wire from conductive material |
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.
| perpendicular | |
| series | |
| orthogonal | |
| parallel |
Connecting the 8 batteries in series multiplies their voltage while keeping their current the same yielding a 72V 20A configuration. Connecting the 8 batteries in parallel multiplies their current while keeping their voltage the same yieleding a 9V 160A configuration. Using a series-parallel connection, 4 batteries can be connected in series and 4 can be connected in parallel resulting in a 36V 80A configuration.
An engineer who wants to document an electric circuit would create which of the following?
a blueprint |
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a matrix |
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a schematic |
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a layout |
A schematic is the proper name for a drawing of an electric or electronic circuit.
The diameter of a number 12 wire is __________ the diameter of a number 6 wire?
double |
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less than |
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more than |
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triple |
The larger the number the smaller the diameter of the wire. So, the diameter of a number 12 wire is less than the diameter of a number 6 wire.