Magnetism (part 8)

Magnetism (part 8) - Physics 113, Dr. Renat Letfullin 1...

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Unformatted text preview: Physics 113, Dr. Renat Letfullin 1 Lecture 07: Chapter 32 B x . F F B U - = B = AI = Physics 113, Dr. Renat Letfullin 2 Today.. . Lorentz Force Magnetic Forces on Current-Carrying Wires Torques on Current Loops An Electric Motor Movie: Magnetic Field S N Physics 113, Dr. Renat Letfullin 3 Last Time: The Hall Effect When a charged particle moving in a vacuum, it is deflected perpendicular to its velocity by a magnetic field. In 1879, Edwin Hall, a graduate student at Johns Hopkins Univ., discovered that the same behavior is true for charged particles moving in a conductor. Edwin Herbert Hall (1855 1938) H m d e V F ev B F eE e w = = = = H d V wv B = / d J I A I v ne ne wtne = = = H I IB V wB wtne tne = = Physics 113, Dr. Renat Letfullin 4 Lorentz Force The force F on a charge q moving with velocity v through a region of space with electric field E and magnetic field B is given by: F x x x x x x x x x x x x x x x x x x v B q v B q F = 0 v B q F B v q E q F + = 2 Physics 113,...
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This note was uploaded on 03/08/2009 for the course PH 113 taught by Professor Joenathan during the Fall '08 term at Rose-Hulman.

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Magnetism (part 8) - Physics 113, Dr. Renat Letfullin 1...

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