Homework 3 - homework 03 KANUNGO ANIL Latest unpenalized...

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homework 03 – KANUNGO, ANIL 1 Latest unpenalized work: Sep 8 2007 Satur- day 04:00 (after this date you can not make a perfect score). Work cutoff: Sep 9 2007, 4:00 am. Question 1, chap 23, sect 1. part 1 of 2 10 points Four point charges are placed at the four corners of a square, where each side has a length a . The upper two charges have identical positive charge, and the two lower charges have charges of the same magnitude as the first two but opposite sign. That is, q 1 = q 2 = q and q 3 = q 4 = - q where q > 0. q 4 q 2 q 3 q 1 P j i Determine the direction of the electric field at the center (point P ). 1. 1 2 ( i - j ) 2. 1 2 ( i + j ) 3. j 4. - 1 2 ( i - j ) 5. - j 6. i 7. - 1 2 ( i + j ) 8. - i Question 2, chap 23, sect 1. part 2 of 2 10 points Determine the magnitude of the electric field at point P . 1. k e q a 2 2. 2 k e q a 2 3. 4 2 k e q a 2 4. 8 k e q a 2 5. 2 2 k e q a 2 6. 4 k e q a 2 Question 3, chap 23, sect 1. part 1 of 1 10 points A charge of - 3 . 39 μ C is located at the origin, and a charge of - 3 . 44 μ C is located along the y axis at 1 . 22529 m.
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