Ex1_S04_blue - Physics 241 Exam 1 February 19, 2004 One...

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1 14 pages total 1 Physics 241 Exam 1 February 19, 2004 One (both sides) 8 1/2” x 11” crib sheet is allowed. It must be of your own creation. k = 1 4 pe 0 = 9 10 9 N m 2 C 2 e 0 = 8.85 10 - 12 C 2 N m 2 e = 1.602 10 - 19 C c = 2.99792458 10 8 m/s (speed of light) N Avogadro = 6.022 10 23 (number of atoms in 12 g of 12 C) m 10 - 3 m 10 - 6 n 10 - 9 p 10 - 12 f 10 - 15 k 10 3 M 10 6 G 10 9 T 10 12 P 10 15 For ax 2 + bx + c = 0 x = - b ± b 2 - 4 ac 2 a 1. Please sign the opscan sheet and print your name on it. 2. Use a #2 pencil to fill in your full name, your student identification number (old one), and finally the answers for problems 1–13. 3. Please be prepared to show your Purdue ID when you hand in your opscan sheet. 14 pages total 2 Consider the three infinite charge sheets shown on edge below. What is value of the electric field in region III? + + + + + + + + + + + + + s 0 –2 s 0 I II III + + + + + + + + + + + + +3 s 0 x s 0 0 - x 3 0 2 0 - x 3 0 2 0 + x 2 0 0 - x none of the above a) b) c) d) e) magnitude direction IV 1. 14 pages total 3 Consider the point charges q i ( x i , y i ) shown below: x i and y i are in meters. What is the electric potential at point P , which is at ( x , y ) = (1,1)? (a) 49 kV (b) 105 kV (c) 134 kV (d) 178 kV (e) None of the above q 2 (0, +2) = 20 m C P (1,1) q 3 (5, 0) = 10 m C x y q 1 (–2, 0) = 10 m C 2. 14 pages total 4 Consider two concentric conducting spheres as shown below. The outer sphere is hollow and has a total charge of +5
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This note was uploaded on 04/12/2011 for the course PHY 241 taught by Professor Virgil.e.barnes during the Spring '11 term at Purdue University-West Lafayette.

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Ex1_S04_blue - Physics 241 Exam 1 February 19, 2004 One...

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