midtermtest1_page 9

# midtermtest1_page 9 - 9 The ﬁgure below shows a set of...

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Unformatted text preview: 9. The ﬁgure below shows a set of equipotential lines that were created by some set of charges. The lines represent potentials ranging from -300 V to + 300 V in steps of 100 V. Also labelled in the plot are the points a = (0,0), b = (1.5 m, 3 m), and c = (3 m, 2.5 m). b c a −300 V 0V +300 V (a) Which point (a, b, or c) has the highest E ? (b) Which point (a, b, or c) has the lowest E ? (c) Estimate the strength of the electric ﬁeld at a point 1/2 way between b and c. (d) Draw several (roughly 6) electric ﬁeld lines on the plot. (e) If these lines were generates by two point charges (one to the left and one to the right), determine which side of the graph contains which charge (i.e. either +left/-right or -left/+right). 9 ...
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