inclasstest 03-solutions

# inclasstest 03-solutions - Version 036/AACBA –...

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Unformatted text preview: Version 036/AACBA – inclasstest 03 – Turner – (56725) 1 This print-out should have 2 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0 points Consider the setup shown in the figure below, where the arc is a semicircle with radius of 73 cm. The total chargeon the arc is- 45 μ C, and distributed uniformly on the semicircle. The Coloumb constant is 8 . 98755 × 10 9 N m 2 / C 2 . x y------------------ Δ θ θ r x y I II III IV B A O Determine the magnitude of the electric field at O . 1. 34965.7 2. 802963.0 3. 4087800.0 4. 1024970.0 5. 112174.0 6. 615755.0 7. 66263.0 8. 273056.0 9. 6751150.0 10. 483157.0 Correct answer: 4 . 83157 × 10 5 N / C. Explanation: Let : q =- 45 μ C , r = 73 cm , and k = 8 . 98755 × 10 9 N m 2 / C 2 . x y------------------ Δ θ θ r x y I II III IV B A O E By symmetry of the semicircle, the y- component of the electric field at the center is E y = 0 ....
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## This note was uploaded on 10/24/2010 for the course PHY 56735 taught by Professor Turner,j during the Fall '10 term at University of Texas.

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inclasstest 03-solutions - Version 036/AACBA –...

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