| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.33 |
| Score | 0% | 67% |
If an electrical circuit is interrupted, which of the following will result?
short circuit |
|
closed circuit |
|
parallel circuit |
|
open circuit |
A closed circuit is a complete loop or path that electricity follows. It consists of a source of voltage, a load, and connective conductors. If the circuit is interrupted, if a wire is disconnected or cut for example, it becomes an open circuit and no electricity will flow.
The joule is a unit of measurement for:
energy |
|
capacitance |
|
power |
|
resistance |
The joule is a unit of measurement for energy.
A diode to an electronic circuit is like a _______________ to a city?
traffic light |
|
one-way street |
|
highway |
|
parking lot |
A diode allows current to pass easily in one direction and blocks current in the other direction.
Which of these materials is not a good conductor of electricity?
gold |
|
copper |
|
tin |
|
air |
All conductors have resistance and the amount of resistance varies with the element. In general, metals make the best conductors of electricity and non-metals make the worst conductors of electricity.
What is the voltage of most household electrical systems in the United States?
220V |
|
110V |
|
60Hz |
|
60V |
Most households use electricity with a voltage of 110V.