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2. A positive charge is placed near a line of negative charge. Sketch the E-field lines and the electric potential lines. 3. Calculate the electric potential at a point p, located at the center of the square of point charges. The distance along a side of the square is d. The charges are q₁ = 4 9 92 = 91, 93 = 90, 942 9o. (Note that the potential is not a vector). 16 kq/d) 4. What is the net potential at point P due to the four point charges shown. (5kQ/2d)

5. Derive the electric potential a distance r from a charge Q. (see notes) 6. The electric field is E = 4 x3. Find the electric potential. (- x²) 7. The electric field is E = 2 x2. Find the electric potential difference between 2.0m and 3.0 m. (-12.7 V) 8. The potential in a given region is V = 4x + 3x². Find the electric field. (-4-6x) 9. The potential in a given region is V = 3x2 + x3. Find the electric field at (x = 3). (-45 V/m) 10. Calculate the electric potential energy for two charges (Q₁ = 4.5 x 10-6, Q₂ = 5.3 x 10) placed a distance 5.0 m apart. (U = .043 J) 11. A charge Q = 3x10-6 C of mass m = 4x10³ kg is at rest. The charge is accelerated by 240 Volts. Calculate the speed of the charge using the conservation of energy. (.6 m/s)