PASCO PK-9023 EQUIPOTENTIAL AND FIELD MAPPER - Manual (Page 12)

scientific 8
012-04346B
Line and Circular Source
a
b
c
+
Draw only the line and point source “a.” Map the
equipotentials. Add circular electrode “b” and again map the
equipotentials. Add circular electrode “c” and again map the
equipotentials.
Questions
How is the spacing of equipotentials affected by the increas-
ing diameter of the circular electrode?
Line and “Sharp” Point
a
a
+
At first, do not draw the two electrodes marked “a.” Map
the equipotentials. Add the electrodes “a” and again map the
equipotentials.
Questions
What effect did adding the extra electrodes have on the
spacing of the equipotentials (field strength) around the
point?
Why did the field strength change even though the radius of
the point did not change?