e1A_121_s06txt

e1A_121_s06txt - exam 1 spring 06 1 .-kg . . . 1. Two...

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Unformatted text preview: exam 1 spring 06 1 .-kg . . . 1. Two charges, Q1 and Q2, are separated by a certain distance R. If the magnitudes of the charges are doubled and their separation is also doubled, then what happens to the electrical force between these two charges? A) It is quadrupled B) It changes by a factor of 3 C) It is doubled D) It remains the same E) It changes by a factor of 8 1D 2. Four equal charges are located at the corners of a square of side d. If the magnitude of each charge is doubled, then what happens to the resultant force on each charge? A) It remains the same B) It is doubled C) It is quadrupled D) None of the other choices is correct E) It changes by a factor of 8 2C 3. Three equal charges are at three of the corners of a square of side d. A fourth charge of equal magnitude is at the center of the square as shown in Figure. Which of the arrows shown represents the net force acting on the charge at the center of the square? A) A B) B C) C D) D E) None of them 3B 4. Four point charges of equal magnitude but varying signs are arranged on the corners of the square of side d as shown in Figure. Which of the arrows shown represents the net force acting on the charge at the upper right hand corner of the square? A) A B) B C) C D) D E) None of them 4B 5. Three identical point charges Q of magnitude +6.0 C each are located at the corners of an equilateral triangle of L = 2 m as shown in Figure....
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This note was uploaded on 09/21/2010 for the course PHY 121 taught by Professor Sharma during the Spring '10 term at Carnegie Mellon.

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e1A_121_s06txt - exam 1 spring 06 1 .-kg . . . 1. Two...

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