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The figure below shows a point charge Q1 on the y axis, a point charge Q2 on the x axis, and a point P at the origin. +y Q1 = + 0.00100 PC 0.800 cm Q2 = -0.00100 C Р +x *0.600 cm 8. The electric field which Q1 creates at the point P is directed A. in the + x direction. B. in the + y direction. C. in the - y direction. D. in the - x direction. 9. The electric field which Q1 creates at the point P has a magnitude of A. 0.140 MN/C. B. 14.0 MN/C. C. 0.250 MN/C. D. 2.50 MN/C. E. 2.50 kN/C. 10. The total electric field at the point P has a magnitude of A. 0.390 MN/C. B. 39.0 kN/C. C. 39.0 kN/C. D. 0.287 MN/C. E. 3.90 kN/C. 11. The total electric field at the point P is directed A. 60.6° below the positive x direction. B. 29.4° below the positive x direction. C. 29.4° above the negative x direction. D. 29.4° above the positive x direction. E. 29.4° below the negative x direction. 4
Consider the circuit below, which contains identical bulbs, ideal batteries, ideal wires having zero resistance, and perfect electrical connections which introduce no extra "stray" resistance. Assume that none of the bulbs will burn out when wired into this circuit. #8 6V #6 w w 9V #1 #7 6 V 3V 6V #2 Hi w w #5 #4 9V #3 12. True or False: Bulb #8 is connected in series with Bulb #7? A. TRUE. B. FALSE. 13. True or False: Bulb #6 is connected in series with Bulb #4? A. TRUE B. FALSE. 14. True or False: Bulb #1 is connected in series with Bulb #3? A. TRUE. B. FALSE. 15. The voltage across Bulb #1 is equal to A. 1V. B. 2 V. C. 3 V. D. 4 V. E. 6 V. 16. The voltage across Bulb #4 is equal to A. 3 V. B. 4 V. C. 6 V. D. 1V. E. 2 V. 17. The voltage across Bulb #8 is equal to A. 2 v. B. 3 V. C. 4 V. D. 6 V. E. 1V. 5