What Are the Uses and Limitations of Electromagnets?

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SUMMARY

Electromagnets are coils of wire that generate a magnetic field when an electric current passes through them. They are widely used in applications such as electric motors, generators, and magnetic locks. The advantages of electromagnets include their ability to be turned on and off, allowing for precise control, while disadvantages include heat generation and dependency on a power source. Future developments in electromagnetism may focus on enhancing efficiency and miniaturization for advanced technologies.

PREREQUISITES
  • Understanding of basic electrical circuits
  • Familiarity with magnetic fields and forces
  • Knowledge of electromagnetic induction principles
  • Awareness of applications in electrical engineering
NEXT STEPS
  • Research the principles of electromagnetic induction
  • Explore applications of electromagnets in electric motors
  • Investigate advancements in electromagnet technology
  • Learn about the role of electromagnets in renewable energy systems
USEFUL FOR

Electrical engineers, physics students, and professionals involved in renewable energy technologies will benefit from this discussion on electromagnets and their applications.

Bez
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It would be great if someone is able to answer the following question (if possible)
What is electromagnet?
How is electromagnet used to generate electricity?
What happens during electromagnetism?
Advantages and disadvantages of using electromagnets.
Future developments in electromagnetism.
Thanks in advance. :)
 
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What do you think the answers are to these? What do you feel electromagnetism is from your knowledge through research?
 
does it help in creating electricity?
 
The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

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