Question

Directions: Answer any Five (5) of the following 9 problems. Show all work partial credit granted. 1. In the H-Atom an electron, ge- -1.6 X 1019 Coul orbits the proton, q 1.6 x 1019 Coul at a radial distance r 0.53 x 1010 m. Calculate: (a) The E-field at the position of the electron due to the proton; (b) The voltage at the position of the electron due to the proton; (c) The energy stored in the E-field generated by the proton. Two charges, q, located at the origin and q2 located on the x-axis at x- 20 X 102 m position are 10 x 10 Coul and 15 X 10 Coul respectively. Determine: (a) The E-field on the x-axis at the geometric midpoint between the charges; (b) The total voltage at the same point. 2. 3. The voltage at point A on the x-axis is 20 V and at point B 12 V. Calculate: (a) The work done in moving a q- 1.2 X 106 Coul from point A to point B; (b) If the points are separated by a distance of 25 X 102 m what force is exerted on q? (c) What is q's acceleration if its mass is 3.1 X 106 kg? 4. For the following circuit determine: (a) Rr. (b) lt, lh. ls: (c) Pini (d) P diss R 2.2 an R2f1 72 4 432 12 V 2b 352 25 5. Two parallel metal plates are charged with equal and opposite charges. If a uniform field, E 200 NYC exists between the plates determine: (a) AV if d 20 x 102 m; (b) C if the Aplate 200 x 10 m2 (c) Q on either plate

Answer 1

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