Motion of Charged Particles in Magnetic Fields Velocity ...

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Motion of Charged Particles in Magnetic Fields Velocity Selector The Mass Spectrometer The Cyclotron Magnetic Force on a Current Carrying Conductor Homework

Velocity Selector

Serway/Jewett Figure 22.11

   

 





 



 









Mass Spectrometer

Serway/Jewett Figure 22.12

   

 

  



           



Example 1





A positive ion with a charge = 1.6022  10  C is accelerated through a potential difference   = 1.0000 kV. The ion then enters a chamber with a uniform magnetic field that is perpendicular to the path of the ion  and has a magnitude = 80.000 mT. The magnetic field causes the ion to move in a semicircle and strike a photographic plate at a distance  = 1.6254 m from the entry slit. What is the mass of the ion? "

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Example 1 (cont’d)







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The Cyclotron

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Magnetic Force on a Current-Carrying Conductor

Serway/Jewett Figure 22.15

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Example 2 A wire 1.80 m long carries a current of 13.0 A and makes an angle of 35.0 O with a uniform magnetic field  =1.50 T. Calculate the magnitude of the magnetic force on the wire.

Example 2 Solution A wire 1.80 m long carries a current of 13.0 A and makes an angle of 35.0 O with a uniform magnetic field  =1.50 T. Calculate the magnitude of the magnetic force on the wire.

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Arbitrarily Shaped Wire in an External Magnetic Field

Serway/Jewett Figure 22.17

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Homework Set 20 - Due Fri. May 21 Read Sections 22.4 & 22.5 Answer Question 22.12 Do Problems 22.8, 22.13 & 22.14