1996 exam 1 - PHY3054 - Exam 1 - Fall 1996 - Selman...

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PHY3054 - Exam 1 - Fall 1996 - Selman Hershfield 1. Three point charges are located on the x-axis as follows: charge Q 1 = +1x10 -6 C is at x = 0 m, charge Q 2 = -1x10 -6 C is at x = 1 m, and charge Q 3 = +4x10 -6 C at x = 2 m. What is the net force in the x direction on charge Q 1 ? 1. -0.054 N 2. -0.018 N 3. 0 N 4. 0.018 N 5. 0.054 N 2. A charging experiment involves three rods. Rod A is attracted to rod B. Rod B is repelled from rod C. Rod A is attracted to rod C. Which of the following CAN be true? 1. Rod A is positive, rod B is positive, and rod C is negative. 2. Rod A is positive, rod B is negative, and rod C is negative. 3. Rod A is negative, rod B is positive, and rod C is a neutral conductor. 4. Rod A is negative, rod B is positive, and rod C is negative. 5. Rod A is a neutral conductor, rod B is negative, and rod C is positive. 3. As shown in Fig. 1(a), two conducting spheres rest on insulating stands and are touching. They are initially neutral. A positively charged rod is then brought close to one of the spheres as shown in Fig. 1(b). The spheres are then separated by pulling apart the insulating bases (see Fig. 1(c)). What is the charged state of the spheres? 1. Both sphere A and sphere B are neutral. 2. Both sphere A and sphere B are positively charged. 3. Both sphere A and sphere B are negatively charged. 4. Sphere A is positively charged and sphere B is negatively charged. 5. Sphere A is negatively charged and sphere B is positively charged. 4. Three charges are placed on the corners of an equilateral triangle as shown in Fig. 2. What is the direction of the net force on the 2 micro-Coulomb charge? 1. 20 degrees 2. 70 degrees 3. 110 degrees 4. 160 degrees
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5. 340 degrees 5. Three charges are placed on the corners of an equilateral triangle as shown in Fig. 2. What is the magnitude of the net force on the 2 micro-Coulomb charge?
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1996 exam 1 - PHY3054 - Exam 1 - Fall 1996 - Selman...

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