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electromagnetic induction - How is polarity determined when making a permanent magnet using the "single touch" or "stroking" method? - Physics Stack Exchange
Why is pure iron not used for making permanent magnets? Name one material used for making permanent magnets. Describe how permanent magnets are made electrically. State two examples of electrical instruments made
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DO NOW QUESTION: How did the permanent magnet make the electromagnet turn in the electric motor? - ppt download
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Build Your Own Speaker - Scientific American
Magnetization, Demagnetization, and Induced Magnetization
