Question
Use the model to answer the question.
The model shows a simple electromagnet that does not attract metal objects.
An illustration shows the electromagnet cannot attract pins once disconnected from a source of electricity.
Which observation or inference is correct?
(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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1 answer
The correct observation or inference is:
The wire was not connected to the source.
This is because the electromagnet relies on electricity flowing through the wire to generate a magnetic field. When the model is disconnected from the source of electricity, it cannot attract metal objects. The other options do not accurately explain the situation based on the information given.
