lecture35 - Review Example 1

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Review
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Example 1 Two charges of equal magnitude and opposite sign separated by a distance 2a, are  placed on the x axis at ( - a, 0) and (+a, 0).   a) Calculate the electric potential at point P, at (a, a).   b) Calculate the electric field at point P. -q P +q a a a x y
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Example 2 The electric field at the ends of a cylinder perpendicular to a sheet has a  strength of 100N/C.  What is the charge density of the sheet ?
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Quiz 1 Two concentric imaginary spherical surfaces of radius R and 2R respectively  surround a positive point charge Q located at the center of the surfaces. When  compared to the electric flux  Ф through the surface of radius R, the electric  flux  through the surface of radius 2R is: A) ¼ Ф  B) ½ Ф C) Ф  D) 2 Ф
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Example 3 A parallel-plate capacitor has plates of 2cmx3cm in dimension.  The plates are  separated by a 1mm thickness of paper (k=3.7).
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lecture35 - Review Example 1

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