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example, there are three experimental equipotential lines with the
potential , ,..., (Fig. 8.1).
1 2 6

Figure 8.1

By drawing in consecutive order the perpendicular lines to the
equipotential lines we receive the broken force lines. By reducing the

broken lines to the continuous lines we get the pattern of force lines of
this electric field.
9. Laboratory Equipment

Thee research of the electric field is created by the source of
voltage and two electrodes. These electrodes are placed in dish with
water. To coordinate grid is necessary for the definition of the
equipotential lines points. With the help of sensing fingers we detect

the points with the equal potential of electric field. These points are
indicated by the null detector.

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