PART A - In the drawing above, E = 4.0N/C and d = 1.5m. Calculate the work done

Question

PART A - In the drawing above, E = 4.0N/C and d = 1.5m. Calculate the work done by the electric field in moving a +5.0x10-9C charge from A to B. Be sure to include - sign if your answer is negative. Your answer needs to be in J but you don't need to enter the unit in your answer for this question.

PART B - In the situation in diagram b above, calculate the potential energy difference between the +5.0x10-9C charge at B and at A. Be sure to include - sign if your answer is negative. Your answer needs to be in J but you don't need to enter the unit in your answer for this question.

PART C - For the situation in diagram b above, calculate the potential difference between A and B. Be sure to include - sign if your answer is negative. Your answer needs to be in V but you don't need to enter the unit in your answer for this question.

Explanation / Answer

Part A) work done by electric field = 5.0x10-9*4*1.5

                                                         =   3*10-8 J

Part B) potential energy difference at B and at A = - 3*10-8 J

Part C)    potential difference between A and B = 4*1.5

                                                                              = 6 V

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