chapter20-web1

chapter20-web1 - Chapter 20 Induced Voltages and Inductance...

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1 Chapter 20 Induced Voltages and Inductance 1. Induce emf and Magnetic flux 2. Faraday’s law of induction 3. Lenz’s law 4. Motional emf 5. Generators 6. Self-Inductance 7. RL circuits 8. Energy stored in a magnetic field
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2 Michael Faraday s 1791 – 1867 s Great experimental scientist s Invented electric motor, generator and transformers s Discovered electromagnetic induction s Discovered laws of electrolysis
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3 Faraday’s Experiment – Set Up s What is induced emf? s How is it produced?
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4 Magnetic Flux s What is magnetic flux? s How do I calculate it? s What is the SI units? s Why the angle dependence? s Flux and B
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5 Electromagnetic Induction – An Experiment s What is electromagnetic induction? s What is induced current?
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6 Example 1. The quarter-circle loop shown in figure has an area of 15 cm 2 . A magnetic field, with B=0.16T exists in the +x direction. Find the flux through the loop in each orientation shown.
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Faraday’s Law and Electromagnetic Induction s What is Faraday’s law? s
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chapter20-web1 - Chapter 20 Induced Voltages and Inductance...

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