Lab_11 - Physics 272Lab Lab 11: Motion of a Charged...

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Physics 272Lab Lab 11: Motion of a Charged Particle in a Magnetic Field Lab 11: Motion of a Charged Particle in a Magnetic Field OBJECTIVES In this lab you will Use VPython to simulate the motion of a charged particle in a magnetic field See how changing initial conditions changes changes the particle’s path See how adding an electric field affects the particle’s path The magnetic force on a charged particle is always perpendicular to the particle’s velocity vector. mag F =qv B This fact causes particle paths to be curved, and makes their motion somewhat difficult to visualize. The addition of an electric field makes the particle’s path more complicated. net mag el F =F +F =qv B+qE Using VPython you will be able to manipulate both the magnetic and electric field to produce several particle tracks. 1) Warm-Up Problem: Problem (1) At a particular instant, an electron is moving with velocity v in the plane of the page, and there is a uniform magnetic field B into the page throughout this region; the magnetic field is produced by some large coils which are not shown. Draw the trajectory of the electron and explain qualitatively. CHECKPOINT 1: Ask an instructor to check your work for credit. You may proceed while you wait to be checked off
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Physics 272Lab Lab 11: Motion of a Charged Particle in a Magnetic Field 2) A Particle in a Magnetic Field a) Open your Lab 1 program. b) Save this program as a new name so you still have access to your original Lab 1 program. c) Remove everything in the initial values, create objects, and calculations sections and remove your scale factor.
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This note was uploaded on 04/23/2011 for the course PHYS 272 taught by Professor K during the Spring '07 term at Purdue University-West Lafayette.

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Lab_11 - Physics 272Lab Lab 11: Motion of a Charged...

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