Need help with questions 10, 11 and 12. Please show your work. In the drawing be

Question

Need help with questions 10, 11 and 12. Please show your work.

In the drawing below, E = 4.ON/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. In the situation in diagram c 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. For the situation in diagram c above, calculate the potential difference between A and B. be in V but you don't need to enter the unit in your answer for this question. Be sure to include - sign if your answer is negative.

Explanation / Answer

10.

Potential difference between A and B = V = E .d = Ed Cos30 = 4 x 1.5 Cos30 = 5.2 volts

q = charge being moved = 5 x 10-9 C

Work done = W = qV = (5 x 10-9 ) 5.2 = 2.6 x 10-8 J

11.

Work done = change in potential energy = 2.6 x 10-8

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