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Unformatted text preview: Quiz 1 Name: Key ID: 1. Positive charges with magnitudes 3.50 mC (=3.50 × 103 C) and 6.75 mC are located at the origin and at the point (10.00, 0) meters on the x axis, respectively. What are the strength and direction of the field they generate at the point (0, 10.00) meters on the y axis? Step 4, vector involved? Yes and properly processed. Step 5, unit in the final answer correct? Answered all were asked? final answer in unit of electric field: Newton/Coulomb. O Q 1 (0,0) Q 2 (10,0) Y X E 1 E 2 (0,10) θ Step 1, formulas or related concepts. r E a a 2 charges point  multi from field electric r Q k e ∑ = Step 2, known quantities. m 2 00 10 mC, 75 6 m 00 10 mC, 50 3 2 2 1 1 . r . Q . r . Q = = = = Step 3, direct application of the formula ( ) ( ) [ ] ( ) ( ) ( ) ( ) ( ) ( ) ( ) (N/C) 10 30 5 10 15 2 2 1 2 00 10 10 75 6 00 10 10 50 3 2 1 2 00 10 10 75 6 sin cos sin 2 1 2 00 10 00 10 cos sin cos 5 5 2 3 2 3 2 3 2 2 2 2 1 1 2 2 2 2 2 2 2 1 1 j i j i j i E E E j i E j E 2 1 2 1 ˆ ....
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This note was uploaded on 05/06/2008 for the course PHYS 1304 taught by Professor Ye during the Spring '08 term at SMU.
 Spring '08
 Ye
 Charge, Magnetism

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