| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.41 |
| Score | 0% | 68% |
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.
What is the potential difference in an electrical circuit a measure of?
the current at a specific location in the circuit |
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the resistance at a specific location in the circuit |
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the load at a specific location in the circuit |
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the voltage at a specific location in the circuit |
Electrons flow from an area of high concentration to an area of low concentration. A high voltage indicates a high concentration of electrons that creates a greater potential for electron flow than a low voltage. When applied to a load, voltage creates electricity and potential difference is the measure of voltage at a specific location in an electrical circuit.
This circuit component symbol represents a(n):
DC source |
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transformer |
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capacitor |
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AC source |
Direct current flows in only one direction in a circuit, from the negative terminal of the voltage source to the positive. A common source of direct current (DC) is a battery.
Using a fuse with a current rating higher than that required by a circuit:
makes no difference |
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is required |
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is recommended |
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makes the circuit less safe |
A fuse is a type of low resistance resistor that stops current flow in a circuit in response to a larger than intended electric current flow. Using a fuse with a higher current rating than required by a circuit is less safe as it could potentially allow overcurrent and risk a fire or heat-related equipment damage.
| 117 W | |
| 180 W | |
| 40 W | |
| 120 W |