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by: Alverta Blick III


Alverta Blick III
GPA 3.66


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Class Notes
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This 4 page Class Notes was uploaded by Alverta Blick III on Tuesday October 13, 2015. The Class Notes belongs to PHYS 2002 at Louisiana State University taught by Staff in Fall. Since its upload, it has received 21 views. For similar materials see /class/223000/phys-2002-louisiana-state-university in Physics 2 at Louisiana State University.




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Date Created: 10/13/15
Chapter 22 221 Electromagnetic Induction This phenomenon is the process of bringing about or inducing an m in a circuit which in turn induces a current This occurs in a coil of wire connected within a circuit It occurs when 1 a magnetic eld in which the coil is changes 2 the area of the coil in a magnetic eld changes or 3 the orientation of the coil in the magnetic eld changes Ammetet s39 llllll Bar magnet Con la la tr Cumell hlohnson Wiley Publishing Phystcs 5th Ed Figure 220l W0894 X A II 39 l I X X X X X X X x X X x X X x X X X X X X x X X X V X X X W 39 X X A 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 X Cutnell amp Johnson Milnu Duklichinn Example of usefulness of this concept is in the cruise control of a car to keep it going at a constant speed Servo control mechanism switch Sensing c0 Drive shaft Magnet Cutnell amp Johnson Wiley Publishing Physics 5th Ed Figure 2202 W0895 C M Y K 222 Motional EMF EMF induced in a moving conductor The separated charges on the ends of a moving conductor give rise to an induced EMF called motional EMF It originates from the motion of charges through a magnetic eld VBL Only EMF current is produced While the rod is movingthe faster it travels the greater the voltage ConduCLing rod a i Conducting rail ll M 1 M I 4 X X 5 gt4 1 x x x L1 x 4 l x x


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