NOTE: ANSWERS MUST BE DIGITALIZED NOT HANDWRITTEN BECAUSE I AM HAVING A HARD TIME SEEING MESSY HANDWRITING

*ANSWER THE MULTIPLE CHOICE ONLY

Additional Mufti-s Activity 5. Social Context The community Is a rich source of teaming opportunities of electric potential. Choose one from the following suggested activities In understanding the importance and utilization of electric potential in our daily fires: 1. In a certain region an electric potential V is present. An unknown charge 0 is moved around this region between points at potential difference av. A physicist measures the change In the potential energy AU es the charge is moved. The table below shows the date of the measurements. The unit for at! are W {crepe-Volts}. the units for cu are kJ {kilmicuies}. \"WEBER\" m- 3623 1516 WEI-mm You went to find the value of the unknown charge Q In me. Since cu = coir make the plot y - nix where y as art and x - iii\". Use Excel. calmiatcr or whatever you prefer. From the slope of the plot. calculate Q. 2. Suppose a friend asks you to explain how eiectric potential relates to potential energy. Write a brief explanation that you could use to explain this concept to a friend who does not understand the retaticnehip between two concepts. For Nos. 1-2, refer to this problem: Four positive charges of equal magnitude were placed in each corner of a square. 1. What will be the electric potential at the center of the square? a. zero b.4k- c. 8VZk d. 4V2k- 2. What will be the electric potential at the center of the square if two charges at the top are replaced with negative charges? a. zero b.4k- c. 8V2k d. 4V2k- 3. If the distance between two charges is quadrupled, how would the electric potential energy change? a. doubled b. halved c. quadrupled d. quarteredFor Nos. 4-8 refer to the diagram at the right +5 V -5 V 4. What is the direction of the electric field at point B? a. upward c. right B b. downward d. left 5. What is the direction of the electric field at point A? a. upward b. downward c. right +10 V OV -10 V d. left 6. Suppose a positive charge was moved from points A to B. What is work done along the path? a. increasing c. zero b. decreasing information d. incomplete 7. Suppose a negative charge was moved from points A to B. What is work done along the path? a. increasing C. zero b. decreasing information d. incomplete 8. At which point is the electric field does zero work on a test charge? B a. A and D c. B and C b. A and B d. D and C D 9. At which point has higher potential? a. A b. C C. D d. B 10. At which point is the electric field strongest? a. A b. C c. D d. B11. What is the change in potential energy when a +3.5 C point charge was moved from a negative plate to a positive plate with a potential difference of 8V? a. 28 J b. 0.4375 J c. 2.29 J d. OJ 12. What is the magnitude of the electric field between parallel plates with 25 V of potential difference and placed 25 cm apart? a. IN/m b. 1V/C c. 1 N/C d. INm/C 13. What is the electric potential at point A when q1 = -20 uC and q2 = +20 HC? + A 10 cm 5 cm a.8.0 uC b.1.9 HC c.5.5 HC d.2.4 HC14. Which of the following are valid units for electric field? I. N/C II. J/Cm Ill. V /m a. I and II only b. II and III only c. I and III only d. I, II and III 15. How much work is needed to decreases the distance between a +15 uC charge and a -20 uC charge from 1 m to 0.25 m? a.-8.1 J b.8.1 J c.2.7 J d.-2.7 J