lecture_17_F2011

lecture_17_F2011 - Lecture 17 Chapters 27-28 Herewehave v...

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Lecture 17 Chapters 27-28 Page 1 Here we have  v and  B perpendicular : v B parallel : X    X    X    X    X                 X    X    X    X    X               X    X    X    X    X  X    X    X    X    X            X    X    X    X     X    X    X    X   X                  Pulling Force is needed to move the slide (or wire) to the right. v I L B X    X     v I L X     X  B X    X
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Lecture 17 Chapters 27-28 Page 2 Power = energy/time
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Lecture 17 Chapters 27-28 Page 3  Problem A 1000 -turn coil of wire that is 2.0 cm in diameter is in a magnetic field that drops from 0.10 T to 0 T in 10 ms. The axis of the coil is parallel to the field. What is the emf of the coil? X    X    X    X
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Lecture 17 Chapters 27-28 Page 4 Lenz Law:  (direction of the induced current)
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lecture_17_F2011 - Lecture 17 Chapters 27-28 Herewehave v...

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