PASCO ES-9060 Charge, Equipotential and Field Mapper - Manual (Page 14)

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Model No. ES-9060 Charge, Equipotential, and Field Mapper
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Experiment 6: Floating Insulator
Before cutting the rectangular
insulator, map the equipotentials of
the two straight electrodes. Cut out a
rectangular section of the paper and
again map the equipotentials.
Questions:
a) How does the rectangular insulator
distort the field?
b) What effect would moving the
rectangular insulator have?
Experiment 7: Line and Circle Source
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:
a) How is the spacing of the
equipotentials affected by increasing the diameter of the circular
electrode?
Experiment 8: Line and “Sharp” Point
Before drawing the two electrodes
marked “a”, map the equipotentials.
Add the electrodes “a” and again map
the equipotentials.
Questions:
a) What effect did adding the extra
electrodes have on the spacing of the
equipotentials (field strength) around
the point?
b) Why did the field strength change, even though the radius of the
point did not change?
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Schematic 6
rectangular cut-out
a
b
c
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Schematic 7
a
a
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Schematic 8