chp32_4 - PHY2061 R. D. Field Motion of a Charged Particle...

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PHY2061 R. D. Field Department of Physics chp32_4.doc University of Florida Motion of a Charged Particle in a Magnetic Field Consider a charged particle q with velocity r vv x v y xy =+ $$ , and kinetic energy Em v m v v kin == 1 2 1 2 2 rr , in a uniform magnetic field r BB z =− $ . The magnetic force on the particle is given by r r r Fq v B B . The magnetic force does not change the speed (kinetic energy) of the charged particle. The magnetic force does no work on the charged particle since the force is always perpendicular to the path of the particle. There is no change in the particle’s kinetic energy and no change in
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This note was uploaded on 05/31/2011 for the course PHY 2061 taught by Professor Fry during the Spring '08 term at University of Florida.

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