macroscopic concepts

Electromagnetism

and Magnetism

Electromagnetism
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Magnetism and Electromagnetism are two related but different concepts. Here's a simple way to understand them:

Magnetism is the property of magnets or materials like iron that can attract or repel certain objects. It's what makes fridge magnets stick or compasses point north. For all details read the article about Magnetism

Electromagnetism happens when electricity creates a magnetic field. If you pass an electric current through a wire, it creates a magnetic field around it. This is how we can make magnets that turn on and off! Some examples are: the magnets in speakers, electric motors, or an MRI machine.


Key Difference:

  • Magnetism exists naturally in some materials (like magnets or the Earth).

  • Electromagnetism is magnetism that is created by electricity. It only happens when there's an electric current.


A fun experiment

If you wrap a wire around a nail and connect it to a battery, you’ve made an electromagnet! It will attract metal objects, but only while the electricity is flowing.

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