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Questions and Answers
What is the purpose of the iron core in an electromagnet?
What is the purpose of the iron core in an electromagnet?
- To prevent the flow of electric current
- To increase the resistance in the wires
- To concentrate the magnetic flux produced by the current outside the wires (correct)
- To make the electromagnet permanent
Which part of an electromagnet is responsible for serving as the passage for electric current?
Which part of an electromagnet is responsible for serving as the passage for electric current?
- Power source
- Insulated wire (correct)
- Iron core
- Wires need to be insulated
Why does an electromagnet stop exhibiting magnetism when the electric current is cut off?
Why does an electromagnet stop exhibiting magnetism when the electric current is cut off?
- The property of magnetism relies on the flow of electric current (correct)
- The wire becomes permanently magnetized
- The power source deactivates the magnetic field
- The iron core loses its conductivity
Why does insulated wire play a crucial role in an electromagnet?
Why does insulated wire play a crucial role in an electromagnet?
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What determines the power of an electromagnet?
What determines the power of an electromagnet?
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