PASCO PK-9023, Instruction Manual And Experiment Manual

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scientific
7
012-04346B
Floating Electrode
+
Before drawing the circular electrode, map the equipotentials
of the two straight electrodes. Draw the circular electrode
and again map the equipotentials.
Questions
How does the circular electrode distort the field?
What is the potential of the circular electrode? Of the area
inside the electrode?
What effect would moving the circular electrode have?
Floating Insulator
Rectangular cut-out
+
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
How does the rectangular insulator distort the field?
What effect would moving the rectangular insulator have?