Four charges are fixed in place at the corners of a square
Chapter , Problem 12(choose chapter or problem)
Four charges are fixed in place at the corners of a square as shown in Figure 21-34. No other charges are nearby. Which of the following statements is true?
(a) \(\vec{E}\) is zero at the midpoints of all four sides of the square.
(b) \(\vec{E}\) is zero at the center of the square.
(c) \(\vec{E}\) is zero midway between the top two charges and midway between the bottom two charges.
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