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Linday12
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Homework Statement
In an experiment similar to J. J. Thomson's, charged particles are observed to travel through a magnetic field of 0.040 T with a radius of curvature of 0.20 m. The path of these particles is made straight again when an electric field is introduced by two parallel plates.
V=200 V
distance between plates=10cm=0.10m
radius=0.20m
B=0.040T (assuming its parallel)
Homework Equations
r=mv/qB
ek=1/2(mv^2)=qV
v=[tex]\sqrt{2qV/m}[/tex]
r[tex]^{2}[/tex]=m2V/qB[tex]^{2}[/tex]
q/m=2V/r[tex]^{2}[/tex]B[tex]^{2}[/tex]
The Attempt at a Solution
=2(200V)/(0.20m)[tex]^{2}[/tex](0.040T)[tex]^{2}[/tex]
=6.3 x 10^6 C/kg
Does this look to be correct? I wasn't sure if I could do it all at once if the force was exerted at two different times (although it seems to make sense).
Thanks.