| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.03 |
| Score | 0% | 61% |
If an electrical circuit is interrupted, which of the following will result?
open circuit |
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parallel circuit |
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closed circuit |
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short 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.
| 6V 60A | |
| 36V 10A | |
| 72V 120A | |
| 18V 30A |
Connecting the 6 batteries in series multiplies their voltage while keeping their current the same yielding a 36V 10A configuration. Connecting the 6 batteries in parallel multiplies their current while keeping their voltage the same yielding a 6V 60A configuration. Using a series-parallel connection, 3 batteries can be connected in series and 3 can be connected in parallel resulting in a 18V 30A configuration.
The joule is a unit of measurement for:
capacitance |
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resistance |
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energy |
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power |
The joule is a unit of measurement for energy.
A __________ electric current produces a magnetic field proportional to the amount of current flow.
high voltage |
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stationary |
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moving |
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low 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.
Why is an insulator a poor conductor of electricity?
an insulator has few free electrons |
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an insulator is made of organic material |
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an insulator has many free electrons |
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an insulator is made of inorganic material |
Insulators have valence shells that are more than half full of electrons and, as such, are tightly bound to the nucleus and difficult to move from one atom to another.