| By the end of this chapter you should be able to
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 | describe and investigate the connection between electricity and magnetism;
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| describe key scientists and their contributions to the field of electromagnetism;
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| describe how an electromagnet works and determine its polarity;
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| list technologies based on electromagnetism;
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| define magnetic flux and describe magnetic induction;
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| describe the components and operation of an electric motor and generator;
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| calculate the magnetic force on a moving charged particle and its cyclotron radius;
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| calculate the forces felt by two current-carrying wires and a wire loop rotating in a magnetic field; and
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| describe the principles behind the mass spectrometer, galvanometer, and cathode ray tube.
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