| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.33 |
| Score | 0% | 67% |
What is the voltage of most household electrical systems in the United States?
60Hz |
|
60V |
|
220V |
|
110V |
Most households use electricity with a voltage of 110V.
Which of the following will help to prevent a short circuit?
resistor |
|
transistor |
|
diode |
|
fuse |
Fuses are thin wires that melt when the current in a circuit exceeds a preset amount. They help prevent short circuits from damaging circuit components when an unusually large current is applied to the circuit, either through component failure or spikes in applied voltage.
An engineer who wants to document an electric circuit would create which of the following?
a blueprint |
|
a layout |
|
a matrix |
|
a schematic |
A schematic is the proper name for a drawing of an electric or electronic circuit.
Inductance is a factor in which of the following?
an AC circuit |
|
batteries connected in serial |
|
a DC circuit |
|
determining energy stored by a capacitor |
Inductance is a property of an AC circuit (or a component in an AC circuit) that quantifies resistance to changes in current. The current in an AC circuit is continuously changing and inductive reactance (the opposition to change) depends both on the inductance of the circuit or component and the rate at which the current is changing.
All electricity is the movement of which subatomic particles?
nuclei |
|
protons |
|
neutrons |
|
electrons |
All electricity is the movement of electrons which are subatomic particles that orbit the nucleus of an atom. Electrons occupy various energy levels called shells and how well an element enables the flow of electrons depends on how many electrons occupy its outer (valence) electron shell.