711_Physics ProblemsTechnical Physics

711_Physics ProblemsTechnical Physics - 25 Electric...

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25 CHAPTER OUTLINE 25.1 Potential Difference and Electric Potential 25.2 Potential Difference in a Uniform Electric Field 25.3 Electric Potential and Potential Energy Due to Point Charges 25.4 Obtaining the Value of the Electric Field from the Electric Potential 25.5 Electric Potential Due to Continuous Charge 25.6 Electric Potential Due to a Distributions Charged Conductor 25.7 The Milliken Oil Drop Experiment 25.8 Application of Electrostatistics Electric Potential ANSWERS TO QUESTIONS Q25.1 When one object B with electric charge is immersed in the electric field of another charge or charges A , the system possesses electric potential energy. The energy can be measured by seeing how much work the field does on the charge B as it moves to a reference location. We choose not to visualize A ’s effect on B as an action-at-a-distance, but as the result of a two- step process: Charge A creates electric potential throughout the surrounding space. Then the potential acts on B to inject the
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