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Introductory Physics Homework Help
Find the potential difference in a rectangle
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[QUOTE="PhysicsIdiot007, post: 4883374, member: 526415"] [h2]Homework Statement[/h2] [/B] Figure 20-3, referred to below, is 0.800m wide and 0.400m tall with "A" in the top left corner, "+4 microC" charge in the top right corner, "+2 microC" charge in the bottom left corner, and "B" in the bottom right corner. [B][/B] Two point charges of magnitude +4.00 μC and +2.00 μC are placed at the opposite corners of a rectangle as shown in Figure 20-3. (a) What is the potential at point A due to these charges? (b) What is the potential at point B due to these charges? (c) What is the potential difference between points A and B? [h2]Homework Equations[/h2] U=(kQq)/r where k=8.99E9 Nm^2/C^2 U=qV V=(kq)/r [h2]The Attempt at a Solution[/h2] I honestly do not know where to begin this problem, other wise I wouldn't have posted it. I started by trying to plug values into "U=(kQq)/r" but quickly realized that would only help me if I knew the charge on points A and B. This is what I had done before I realized I had no idea what I was doing: U=(8.99E9*4*2)/0.89 (0.89 is the hypotenuse of the rectangle) I was then going to plug that number into U=qV and solve for V, but I have no q for points A or B so I'm stuck. [/QUOTE]
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Introductory Physics Homework Help
Find the potential difference in a rectangle
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