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Electric and magnetic fields interact with matter from "summary" of Physics 11 by British Columbia. Schools Department. Curriculum Development Branch

When electric and magnetic fields come into contact with matter, they can interact in various ways. Electric fields are generated by electric charges and exert forces on other charges within the field. When an electric field encounters matter, the charges within the material may rearrange themselves in response to the field. This can cause polarization, where the material becomes electrically polarized with one side having a slight positive charge and the other a slight negative charge. This polarization can then affect the strength and direction of the original electric field. Similarly, magnetic fields interact with matter through the alignment of magnetic dipoles within the material. When a magnetic field is applied to matter, the dipoles may align in the direction of the field, strengthening it, or in the opposite direction, weakening it. This alignment can also induce magnetization in the material, making it magnetic itself. In some cases, the interaction of electric and magnetic fields with matter can produce complex phenomena such as electromagnetic radiation. When an oscillating electric field is coupled with an oscillating magnetic field, they can propagate through space as electromagnetic waves. These waves carry energy and momentum, and can travel through a vacuum without the need for a medium. Understanding how electric and magnetic fields interact with matter is crucial in a wide range of applications, from designing electronic devices to studying the behavior of celestial bodies. By studying these interactions, scientists and engineers can harness the power of electromagnetism for technological advancements and scientific discoveries.
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    Physics 11

    British Columbia. Schools Department. Curriculum Development Branch

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