Lab 1     Field Plots
Lab 1 Exercise
Measured values of the voltage field in a coaxial cable are shown on the right.
Radius of the inner conductor = 1 cm
Radius of the outer conductor = 10 cm
Voltage measurements are taken along radial lines A, B, C, and D
as a function of distance from the center.
The theoretical voltage values are,
where r is the distance from the center and
VBB is the power supply voltage.
How do measurements compare with theory?
- Plot the average measured value as a function of distance from the center.
(Note that the measurements taken along radial line A appear to be off.
Disregard the data taken along radial line A)
Show error limits on your plot.
- What factors contribute to measurement
- Draw field lines on the plot of constant potential lines shown in
Figure 2. Construct the field lines so they and the constant potential lines
form curvilinear squares.