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WM2Problems - WM 2 : CHAPTER 21, QUESTIONS 21 CHAPTER 22,...

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Unformatted text preview: WM 2 : CHAPTER 21, QUESTIONS 21 CHAPTER 22, QUESTIONS 1, 5, 12 CHAPTER 21, PROBLEM 40 CHAPTER 22, PROBLEMS 3, 7, 12, 21 QUESTIONS : Q21-21) Given two point charges, Q and 2Q, a distance l apart, is there a point along the straight line that passes through them where E = 0 when their signs are (a) opposite, (b) the same? If yes, state roughly where this point will be. Q22-1) If the electric flux through a closed surface is zero, is the electric field necessarily zero at all points on the surface? What about the converse: If E = 0 at all points on the surface, is the flux through the surface zero? Q22-5) The electric field E is zero at all points on a closed surface; is there necessarily no net charge within the surface? If a surface encloses zero net charge, is the electric field necessarily zero at all points on the surface? Q22-12) A conductor carries a net positive charge Q. There is a hollow cavity within the conductor, at whose center is a negative point charge q (Fig. 22-23). What is the conductor, at whose center is a negative point charge q (Fig....
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WM2Problems - WM 2 : CHAPTER 21, QUESTIONS 21 CHAPTER 22,...

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