| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.09 |
| Score | 0% | 62% |
A diode to an electronic circuit is like a _______________ to a city?
highway |
|
parking lot |
|
one-way street |
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traffic light |
A diode allows current to pass easily in one direction and blocks current in the other direction.
The valence shell of a conductor is how full of electrons?
full |
|
more than half full |
|
half full |
|
less than half full |
Conductors are elements that allow electrons to flow freely. Their valence shell is less than half full of electrons that are able to move easily from one atom to another.
The ampere is a unit of measurement for:
power |
|
current |
|
inductance |
|
energy |
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.
A __________ electric current produces a magnetic field proportional to the amount of current flow.
low voltage |
|
stationary |
|
moving |
|
high voltage |
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.
What kind of diode allows current to flow in the opposite direction once a certain voltage threshold is reached?
standard diode |
|
v-type diode |
|
zener diode |
|
light emitting diode |
A diode allows current to pass easily in one direction and blocks current in the other direction. A zener diode is a diode which allows current to flow in one direction as normal and will also allow current flow in the reverse direction when the voltage is above a certain value. This value is called the breakdown voltage.