Mass of Electron Lab

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Data Table:

Trial                 V (V)             R (m)              I (A)                B (T)                  v (m/s)           m (kg)            
1 122 .0045 .30 .00136  3.99e7  2.46e-32
2 241 .0045 .50 .00227  4.72e7  3.47e-32

 

A. Calculate B

Sample calc:

CodeCogsEqn.png

B. Calculate v

Sample calc:

CodeCogsEqn (3).png

C. Calculate m

Sample calc:

CodeCogsEqn (4).png

D. Calculate average mass and percent error

avg mass = 2.97e-32 kg

actual mass = 9.11e-31 kg

percent error = |actual - measured|/actual = (9.11e-31 - 2.97e-32)/(9.11 e-31) = 96.7%

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