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Unformatted text preview: le (jml2943) Homework 02 de lozanne (56785) 1 This printout should have 18 questions. Multiplechoice questions may continue on the next column or page find all choices before answering. 001 (part 1 of 2) 10.0 points A uniformly charged conducting plate with area A has a total charge Q which is positive. The figure below shows a crosssectional view of the plane and the electric field lines due to the charge on the plane. The figure is not drawn to scale. E E + Q P Find the magnitude of the field at point P, which is a distance a from the plate. Assume that a is very small when compared to the dimensions of the plate, such that edge effects can be ignored. 1. bardbl vector E P bardbl = Qa 2 2. bardbl vector E P bardbl = Q 4 a 3. bardbl vector E P bardbl = 4 aQ 4. bardbl vector E P bardbl = Q 2 A 5. bardbl vector E P bardbl = QA 6. bardbl vector E P bardbl = Q 4 a 2 7. bardbl vector E P bardbl = 2 QA 8. bardbl vector E P bardbl = Q A 9. bardbl vector E P bardbl = 4 a 2 Q 002 (part 2 of 2) 10.0 points Two uniformly charged conducting plates are parallel to each other. They each have area A . Plate #1 has a positive charge Q while plate #2 has a charge 3 Q . + Q #1 3 Q #2 P x y Using the superposition principle find the magnitude of the electric field at a point P in the gap. 1. bardbl vector E P bardbl = 3 Q 2 A 2. bardbl vector E P bardbl = Q 3 A 3. bardbl vector E P bardbl = 2 Q A 4. bardbl vector E P bardbl = 4 Q A 5. bardbl vector E P bardbl = Q A 6. bardbl vector E P bardbl = Q 7. bardbl vector E P bardbl = 0 8. bardbl vector E P bardbl = 3 Q A 9. bardbl vector E P bardbl = Q 2 A 10. bardbl vector E P bardbl = 5 Q A 003 10.0 points A large flat sheet of charge has a charge per unit area of 7 . 7 C / m 2 . Find the electric field intensity just above the surface of the sheet, measured from its midpoint....
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This note was uploaded on 03/22/2012 for the course PHYS 302L taught by Professor Tsoi during the Spring '10 term at University of Texas at Austin.
 Spring '10
 TSOI
 Physics, Charge, Work

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