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Unformatted text preview: yoon (jey283) – Ch18h4 – turner – (56545) 1 This printout should have 29 questions. Multiplechoice questions may continue on the next column or page – find all choices before answering. 001 (part 1 of 6) 5.0 points Conventional current flows through the ring shown in the figure below in such a way that if you stand at location A on the + x axis and look towards the ring, current appears to be flowing clockwise. The ring lies in the yz plane, encircling the x axis. x z y A B C D E F What is the direction of the magnetic field due to the ring at A? 1. ˆ B A = ( , − 1 , ) 2. ˆ B A = ( , 1 , ) 3. ˆ B A = ( , , 1 ) 4. ˆ B A = ( 1 , , ) 5. ˆ B A = ( , , − 1 ) 6. ˆ B A = (− 1 , , ) 002 (part 2 of 6) 5.0 points At B? 1. ˆ B B = (− 1 , , ) 2. ˆ B B = ( , − 1 , ) 3. ˆ B B = ( , , 1 ) 4. ˆ B B = ( 1 , , ) 5. ˆ B B = ( , 1 , ) 6. ˆ B B = ( , , − 1 ) 003 (part 3 of 6) 5.0 points At C? 1. ˆ B C = ( , − 1 , ) 2. ˆ B C = ( , , 1 ) 3. ˆ B C = ( , 1 , ) 4. ˆ B C = ( 1 , , ) 5. ˆ B C = ( , , − 1 ) 6. ˆ B C = (− 1 , , ) 004 (part 4 of 6) 5.0 points At D? 1. ˆ B D = ( , 1 , ) 2. ˆ B D = ( , , − 1 ) 3. ˆ B D = ( , , 1 ) 4. ˆ B D = (− 1 , , ) 5. ˆ B D = ( 1 , , ) 6. ˆ B D = ( , − 1 , ) 005 (part 5 of 6) 5.0 points At E? 1. ˆ B E = ( , , − 1 ) 2. ˆ B E = ( 1 , , ) 3. ˆ B E = ( , , 1 ) 4. ˆ B E = (− 1 , , ) 5. ˆ B E = ( , 1 , ) 6. ˆ B E = ( , − 1 , ) 006 (part 6 of 6) 5.0 points yoon (jey283) – Ch18h4 – turner – (56545) 2 At F? 1. ˆ B F = ( , , 1 ) 2. ˆ B F = ( , , − 1 ) 3. ˆ B F = ( , 1 , ) 4. ˆ B F = ( 1 , , ) 5. ˆ B F = ( , − 1 , ) 6. ˆ B F = (− 1 , , ) 007 (part 1 of 2) 10.0 points A loop of wire carries a conventional current of 0 . 7 A. The radius of the loop is 0 . 08 m. Calculate the magnitude of the magnetic field at a distance of 0 . 3 m from the center of the loop, along the axis of the loop. Use μ 4 π = 1 × 10 − 7 T · m / A . Answer in units of T 008 (part 2 of 2) 10.0 points What would the magnitude of the magnetic field be at the same location if there were 200 loops of wire in a coil instead of one loop? Answer in units of T 009 (part 1 of 2) 10.0 points A very long wire carrying a conventional cur rent I is straight except for a circular loop of radius R (see the figure below). Calculate the magnitude of the magnetic field at the center of the loop. I R 1. vextendsingle vextendsingle vextendsingle vector B vextendsingle vextendsingle vextendsingle = μ 4 π 2 I R (1 + 2 π ) 2. vextendsingle vextendsingle vextendsingle vector B vextendsingle vextendsingle vextendsingle = μ 4 π 2 I R (1 + π ) 3. vextendsingle vextendsingle vextendsingle vector B vextendsingle vextendsingle vextendsingle = μ 4 2 I R 4....
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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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