Question
The model shows a simple electromagnet that does not attract metal objects.
Which observation is correct?
Picture of a 9 volt battery with a wire connected to the positive terminal, then wound around a nail. the second end of the wire is resting on top of the battery near the negative terminal.
(1 point)
Responses
The model needs a switch in order to work.
The model needs a switch in order to work.
The battery was replaced with a lower voltage.
The battery was replaced with a lower voltage.
The wire was not connected to the source.
The wire was not connected to the source.
The metallic objects lost their magnetic domains.
The metallic objects lost their magnetic domains.
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Which observation is correct?
Picture of a 9 volt battery with a wire connected to the positive terminal, then wound around a nail. the second end of the wire is resting on top of the battery near the negative terminal.
(1 point)
Responses
The model needs a switch in order to work.
The model needs a switch in order to work.
The battery was replaced with a lower voltage.
The battery was replaced with a lower voltage.
The wire was not connected to the source.
The wire was not connected to the source.
The metallic objects lost their magnetic domains.
The metallic objects lost their magnetic domains.
Skip to navigation
Answers
GPT-4o mini
Based on the description of the electromagnet setup, the most accurate observation would be:
**The wire was not connected to the source.**
For the electromagnet to work, the wire needs to be properly connected to the battery to allow current to flow. If one end of the wire is merely resting on the battery terminal without a solid connection, current won't flow through the wire, and the nail won't become magnetized.
The other options are not as relevant in this context:
- A switch is not necessary for the basic operation of an electromagnet; it simply controls the flow of electricity.
- Replacing the battery with a lower voltage wouldn't necessarily prevent it from attracting metal objects, assuming it was connected correctly.
- The idea that metallic objects lost their magnetic domains is not applicable here unless there was an external reason for that to occur, which is not indicated in your description.
**The wire was not connected to the source.**
For the electromagnet to work, the wire needs to be properly connected to the battery to allow current to flow. If one end of the wire is merely resting on the battery terminal without a solid connection, current won't flow through the wire, and the nail won't become magnetized.
The other options are not as relevant in this context:
- A switch is not necessary for the basic operation of an electromagnet; it simply controls the flow of electricity.
- Replacing the battery with a lower voltage wouldn't necessarily prevent it from attracting metal objects, assuming it was connected correctly.
- The idea that metallic objects lost their magnetic domains is not applicable here unless there was an external reason for that to occur, which is not indicated in your description.