1. Derive the expression for the work done by an electrostatic field. (discrete charges, with summations).
1. Derive the expression for the work done by an electrostatic field. (discrete charges, with summations).
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Transcribed Image Text:1. Derive the expression for the work done by an electrostatic field. (discrete charges, with
summations).
2.
Problem 2.31
(a) Three charges are situated at the corners of a square (side a), as shown in Fig. 2.41. How
much work does it take to bring in another charge, +q, from far away and place it in the fourth
corner?
(b) How much work does it take to assemble the whole configuration of four charges?
1
a
+9
-9
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