Quiz5-2007-102

Quiz5-2007-102 - NAME: STUDENT NO: SIGNATURE: DEPARTMENT...

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NAME: STUDENT NO: SIGNATURE: DEPARTMENT PHYSICS 102- Summer School- Instructor: M. Özgür OKTEL- June 12, 2006 QUIZ-5 A non-conducting rod is bent into a semicircle of radius R as shown in the figure. Half of the semicircle (quarter of the circle) is charged with + λ line density while the other half is charged with – λ . At the center of the circle a) Which way does the electric field vector point? (Give the unit vector in terms of j i ˆ , ˆ .) b) What is the magnitude of the electric field? SOLUTIONS + λ R x - λ y
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a-) E + and E - are totally symmetric, so their x components cancel each other. Hence the electric field at origin is in the
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Quiz5-2007-102 - NAME: STUDENT NO: SIGNATURE: DEPARTMENT...

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