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Chapter 17. Physics A First Course. Electricity and Magnetism. Electricity and Magnetism Electromagnets and Induction. 17.1 Electric Current and Magnetism 17.2 Electric Motors 17.3 Electric Generators and Transformers. Key Question: How does an electric motor work?.
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Chapter 17 Physics A First Course Electricity and Magnetism
Electricity and MagnetismElectromagnets and Induction • 17.1 Electric Current and Magnetism • 17.2 Electric Motors • 17.3 Electric Generators and Transformers
Key Question: How does an electric motor work? 17A Investigation: Electromagnetic Forces *Students read text section 17.1 AFTER Investigation 17A
17A Investigation Topics • Assemble parts of an electric motor. • Wrap copper wire for coil of an electric motor. • Calculate the speed of each electric motor.
Describe the effect an electric current in a wire has on a compass. Explain how to change the strength and direction of a wire's magnetic field. Determine whether two wires or coils will attract or repel. Chapter 17.1 Objectives and Vocabulary • coil • solenoid
electric motor rotor commutator armature brushes Describe the role of magnets in electric motors. Explain how electric motors operate. Learn the main THREE parts of an electric motor. Explain how a battery-powered motor works. Chapter 17.2 Objectives and Vocabulary
Key Question: How does an electric generator work? 17B Investigation: Electromagnetic Induction *Students read text section 17.3 AFTER Investigation 17B
17B Investigation Topics • Physically power an electric generator. • Create AC electricity. • Calculate the voltage generated. • Measure and calculate speed of generator. • Graph voltage vs. speed for generator. • Experiment with varying generator configurations. • Evaluate different generator configurations.
electromagnetic induction Faraday's law of induction generator Explain how a magnet can be used to produce current in a coil. Describe the design of a simple generator. Calculate the number of turns or voltage of a coil in a transformer. Chapter 17.3 Objectives and Vocabulary