TOC 1 Physics 212 and 222 Motion in a Magnetic Field Motion of Charges in Magnetic Fields Mass Spectrometer Velocity Selector.

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Presentation transcript:

TOC 1 Physics 212 and 222 Motion in a Magnetic Field Motion of Charges in Magnetic Fields Mass Spectrometer Velocity Selector

TOC 2 Physics 212 and 222 Motion in a Magnetic Field B R Force from the magnetic field Newton’s Second Law F v F v +q

TOC 3 Physics 212 and 222 Motion in a Magnetic Field An electron moves in a circle or radius 2 cm with a speed of 3x10 7 m/s. What is the magnitude of the magnetic field (in units of Gauss) that put the force on the electron?

TOC 4 Physics 212 and 222 Motion in a Magnetic Field An electron moves in a circle or radius 2 cm with a speed of 3x10 7 m/s. If the field points away from you, what is the direction of the movement of the electron? A.Left B.Right C.Clockwise D.Counterclockwise

TOC 5 Physics 212 and 222 Motion in a Magnetic Field R2R2 V - + Source Detector R1R1 -e

TOC 6 Physics 212 and 222 Motion in a Magnetic Field B E -e v

TOC 7 Physics 212 and 222 Motion in a Magnetic Field Motion of Charges in Magnetic Fields Mass Spectrometer Velocity Selector