.
The average of these values should yield a value of
consistent with the preliminary measurement.
For each of the values of V -- i.e. for the same velocity of the electrons -- plot a graph of coil current I vs. 1/r, the curvature of the orbit. The graphs may all be plotted on a single sheet of graph paper.
From the results derived in the General Discussion,
show that for each value of V the
curve of I vs. 1/r should be a straight line.
How well do the experimental points fall on
the straight lines? Determine the slope of each
of these lines and verify that the
dependence of the slope on V is in agreement
with the equation for the straight line graph
(which you have derived). For each curve, determine a value of
.
The average of these values should yield a value of
consistent with the preliminary measurement.
Using the best (average) value of
,
compute a value of e/m for each measurement
made. Compare the average of these values
with the accepted value.