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Electromagnetic Induction
Objectives
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Upon completion of this chapter, you should be able to:
- define magnetic flux and explain how an induced emf is created, and determine induced emfs and currents.
- understand the operation of electrical generators and calculate the emf produced by an ac generator, and explain the origin of back emf and its effect on the behavior of motors.
- explain transformer action in terms of Faraday's law, calculate the output of step-up and step-down transformers, and understand the importance of transformers in electric energy delivery systems.
- explain the physical nature, origin, and means of propagation of electromagnetic waves and describe the properties and uses of various types of electromagnetic waves.
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