Electromagnetism

  1. Photograph 7.7(a) shows a straight wire in a circuit being placed above a compass and parallel to the magnetic needle pointing north. When the circuit is closed, the magnetic needle is seen swinging to the right as shown in Photograph...

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Magnetism

  1. An object that is magnetic is called a magnet.   2. Most magnets are made of iron or steel. Some are made of cobalt or nickel.   3. Magnets can pick up objects that are made of magnetic metals, such as paper...

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