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Published byWilfred Matthews Modified over 4 years ago

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Announcements Exams will be returned TOMORROW! Homework for tomorrow… Ch. 29: CQ 1, Probs. 4 & 34 Office hours… MW 12:30-1:30 pm TR 9-10 am F 1-2 pm Tutorial Learning Center (TLC) hours: MW 8-10 am, 12-6 pmR 8-12 pm, 2-6 pm T 8-1 pm, 2-6 pmF 8-10 am, 2-5 pm

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Chapter 29 Potential & Field (Connecting Potential and Field & Sources of Electric Potential)

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29.1: Connecting Potential & Field Force concepts Energy concepts

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29.1: Connecting Potential & Field Force concepts Energy concepts

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29.1: Connecting Potential & Field Electric potential and electric field are NOT two distinct entities But rather two different representations of how source charges alter space around them

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Electric potential and electric field are NOT two distinct entities But rather two different representations of how source charges alter space around them Graphically: ΔV = negative of the area under the E vs. s curve between s i & s f 29.1: Connecting Potential & Field

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Ex. 29.1: Finding the Potential The figure below is a graph of E x, the x-component of the electric field, versus position along the x-axis. Find and graph V(x). Choose V = 0V at x = 0m.

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Ex. 29.1: Finding the Potential The figure below is a graph of E x, the x-component of the electric field, versus position along the x-axis. Find and graph V(x). Choose V = 0V at x = 0m.

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Quiz Question 1 This is a graph of the x-component of the electric field along the x-axis. Choose the potential to be zero at the origin. What is the potential at x 1m? 1. 2000V 2. 1000V 3. 0V 4. -1000V 5. -2000V

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Connecting V & E for a point charge… i.e. Use the E-field of a point charge to find its electric potential..

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Ex. 29.2: The potential of a parallel-plate capacitor Find the electric potential inside the capacitor. Let V=0V at the negative plate. +++++++++++++++++++++++++++++++ -------------------------------------------------------

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