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

2. 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

3. 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? 85.3 0.001

4. 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

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

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

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