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Chapter19

# Chapter19 - 594 CHAPTER 19 ELECTRIC POTENTIAL ENERGY AND...

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3 c -250 V ~ ro z c ~ CL (.) E (.) Q) w B -100 V +150 V A +50 V +250 V 1. Increasing the area of the plates 2. Decreasing the area of the plates 3. Increasing the separation between the plates 4. Decreasing the separation between the plates 5. Inserting a dielectric between the plates (a) A, B, C (b) A, C, B (c) C, B, A (d)C,A,B (e) B, C, A (a) 2, 4 (b) 2, 3, 5 (c) 1,4, 5 (d) 1, 3 Section 19.5 Capacitors and Dielectrics 17. Which two or more of the following actions would increase the energy stored in a parallel plate capacitor when a constant potential difference is applied across the plates? 12. The drawing shows a plot of the electric potential V versus the displacement s. The plot consists offour segments. Rank the magni· tude of the electric fields for the four segments, largest to smallest. (a) D, C, B, A I i (b) A and C (a tie), B and D (a tie) (c) A, B, D, C (d)B, D, C,A (e) D, B, A and C (a tie) 2. Multiple-Concept Example 4 provides useful background for problem. Point A is at a potential of + 250 V, and point D is at II, tential of -150 V. An a-particle is a helium nucleus that COD. protons and two neutrons; the neutrons are electrically}]C111 a-particle starts tram rest at A and accelerates toward D, a-particle arrives at B, what kinetic energy (in electron volts) have? 'T This icon represents a biomedical application. +3q D c -4q -q c B +6q -12q I t- - 2q I +7q +4q - . '" f _5,-3, I B -2q +6q +3q A LEMS A -2q Section 19.1 Potential Energy, Section 19.2 The Electric Potential Difference ssm Solution is in the Student Solutions Manual. _ Solution is available online at www.wiley.comlcollegelcntnell +4q 594 CHAPTER 19 ELECTRIC POTENTIAL ENERGY AND THE ELECTRIC POTENTIAL Note to Instructors: Most of the homework problems in this chapter are available for assignment via an online homework management program 5' as WiIeyPLUS or WebAssign, and those marked with the icon are presented in WiIeyPLUS using a guided tutorial format that provides enhanced interactivity. See Preface for additional details. Note: All charges are assumed to be point charges unless specified otherwise. Section 19.3 The Electric Potential Difference Created by Point Charges 6. The drawing shows three arrangements of charged particles, all the same distance from the origin. Rank the arrangements, largest to smallest, according to the total electric potential Vat the origin. (a) A, B, C (b) B, A, C (c) B, C,A (d) A, Band C (a tie) (e) A and C (a tie), 8 9. Four pairs of charged particles with identical separations are shown in the drawing. Rank the pairs according to their electric po- tential energy EPE, greatest (most positive) first. (a) A and C (a tie), 8 and D (a tie) (b) A, B, C, D (c)C, B, D,A (d) B, A, C and D (a tie) (e) A and B (a tie), C, D Section 19.4 Equipotential Surfaces and Their Relation to the Electric Field 11. The drawing shows edge-on views of three parallel plate capaci- tors with the same separation between the plates. The potential of each plate is indicated above it. Rank the capacitors as to the magni- tude of the electric field inside them, largest to smallest.

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Chapter19 - 594 CHAPTER 19 ELECTRIC POTENTIAL ENERGY AND...

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