| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.14 |
| Score | 0% | 63% |
A diode to an electronic circuit is like a _______________ to a city?
traffic light |
|
highway |
|
one-way street |
|
parking lot |
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?
more than half full |
|
full |
|
less than half full |
|
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.
In electrical wiring, which of the following are proportional?
the length of the wire and the amount of the voltage |
|
the diameter of the wire and the amount of the current |
|
the length of the wire and the amount of the current |
|
the diameter of the wire and the amount of the voltage |
Current flow through a wire increases the temperature of the wire. If too small a wire is used, the wire will heat up causing a loss in conductivity and possibly a fire. The thicker in diameter a wire is, the more current it can carry without overheating.
| 43 Ω | |
| 44 Ω | |
| 120 Ω | |
| 40 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 = \( \frac{V}{I} \) = \( \frac{80}{2} \) = 40 Ω
A transistor to an electronic circuit is like a _______________ to a house?
no trespassing sign |
|
safe |
|
gate |
|
driveway |
A transistor works by allowing a small amount of current applied at the base to control general current flow from collector to emitter through the transistor. A transistor acts as a gate or switch for electronic signals.