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3. An electron moves along the trajectory of FIGURE 025.3 from i to f. a. Does the electric potential energy increase. decrease. or stay the same? Explain. b. Is the electron's speed at f greater than. less than. or equal to its speed at i? Explain. \f7. A capacitor with plates separated by distance d is charged to a potential difference ll/c. All wires and batteries are disconnected. then the two plates are pulled apart (with insulated handles) to a new separation of distance 2d. a. Does the capacitor charge Q change as the separation increases?I If so. by what factor?II If not. why not? b. Does the electric eld strength E change as the separation increases? If so. by what factor? If not. why not? c. Does the potential difference AVE change as the separation increases? If so. by what factor? If not. why not? 8. Rank in order, from largest to smallest. the electric potentials Va to V: at points a {o e in FIGURE 025.8. Explain. d CO b + + + + + + + + + + + ++ +++ FIGURE Q25.89. FIGURE Q25.9 shows two points inside a capacitor. Let V = 0 V at the negative plate. a. What is the ratio V2/V, of the electric potentials? Explain. b. What is the ratio E,/E, of the electric field strengths?\f7. II What is the electric potential energy of the group of charges in FIGURE EX25.7?-4.0 nC 3.0 nC + 3.0 cm 14.0 cm + 3.0 nC FIGURE EX25.7