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Unformatted text preview: yoon (jey283) – midterm 02 review – turner – (56545) 1 This printout should have 27 questions. Multiplechoice questions may continue on the next column or page – find all choices before answering. 001 10.0 points Throughout a particular region of space, the electric potential can be expressed as V = (4) xz +( − 1) y +( − 6) z , what is the magnitude of the electric field at point p = (9 , − 8 , 3) m. Answer in units of N / C 002 10.0 points The figure shows three very large metal disks carrying the indicated charges. On each surface, the charges are distributed uniformly. Each disk has a very large radius R and small thickness t . The distances between disks are a and b , both much smaller than R . Calculate V 2 − V 1 . 1. 1 ǫ πR 2 ( Q 2 b − Q 1 a ) 2. 1 ǫ πR 2 ( Q 1 a − Q 2 b ) 3. 2 ǫ πR 2 ( Q 2 b − Q 1 a ) 4. 1 2 ǫ πR 2 ( Q 1 a − Q 2 b ) 5. 1 ǫ πR 2 ( Q 2 b − ( Q 2 − Q 1 ) t − Q 1 a ) 6. 2 ǫ πR 2 ( Q 2 b − ( Q 2 − Q 1 ) t − Q 1 a ) 7. 1 2 ǫ πR 2 ( Q 2 b − Q 1 a ) 8. 2 ǫ πR 2 ( Q 1 a − Q 2 b ) 003 10.0 points A small metal sphere of radius r = 8 mm has an initial charge q = 3 μ C. A very long ideal copper wire is attached to this sphere and connected to a very distant, large, uncharged metal sphere of radius 75 cm. Calculate the final charge Q on the large sphere, neglecting the small amount of charge on the wire. Answer in units of μ C 004 10.0 points The electron in the figure is located at the origin and traveling with velocity vectorv = ( 1 . 5 × 10 6 , 2 . 6 × 10 6 , ) m/s. What is B z at point A = (1 . 1 × 10 − 9 , , 0) m? Answer in units of T 005 10.0 points A battery is connected to a Nichrome wire and a conventional current I = 0 . 2 A runs through the wire. The wire is laid out in the form of a rectangle x = 44 cm by y = 5 cm and the current flows in a clockwise direction about the loop. What is the value of B z at the center of the rectangle? Answer in units of T 006 10.0 points A thin wire is part of a complete electri cal circuit that carries current I . For this problem, consider only the piece of wire of length d shown in the figure. Choose the inte gral that will correctly calculate vector B wire at the point P = ( − w, h, 0)....
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This note was uploaded on 10/19/2011 for the course PHY 56545 taught by Professor Turner,j during the Fall '11 term at University of Texas.
 Fall '11
 TURNER,J

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