| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.93 |
| Score | 0% | 59% |
Which of the following will increase the magnetic field produced by the electric current in a wire?
wrap the wire around a ceramic core |
|
wind the wire into a coil |
|
construct the wire from insulative material |
|
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.
Which of the following is not a terminal on a transistor?
base |
|
collector |
|
input |
|
emitter |
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.
The valence shell of a conductor is how full of electrons?
more than half full |
|
half full |
|
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.
| 10V 30A | |
| 6V 50A | |
| 30V 25A | |
| 60V 5A |
Connecting the 10 batteries in series multiplies their voltage while keeping their current the same yielding a 60V 5A configuration. Connecting the 10 batteries in parallel multiplies their current while keeping their voltage the same yielding a 6V 50A configuration. Using a series-parallel connection, 5 batteries can be connected in series and 5 can be connected in parallel resulting in a 30V 25A configuration.
A transistor to an electronic circuit is like a _______________ to a house?
safe |
|
gate |
|
driveway |
|
no trespassing sign |
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.