4. Now we want to find the electric field at point A which is a distances to the right of the origin. +Q C. S --- S 2 x = 0 -Q a. Draw the electric field vectors at point A due to the +Q charge and that due to the - Q charge. b. What is the total electric field E at point A? Answer in terms of Q, s, and physical constants. Write in component vector form with +x to the right. Please simplify. What is the electric force vector on a negative ion of charge -2e placed at A? Answer in terms of Q, s, and physical constants e and K. Write answer in component vector form. Note that e = +1.602 x 10-19 C is the elementary charge.

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A. Refer on the figure and answer the following questions below: Performance Task 200 J0:15.32 45 cm 59.03° 4.5,C: Q2 DECH) 1. Find the net electric field at point E. a. Draw a body diagram showing all the individual electric fields acting on point E. b. Calculate the magnitude of individual electric field on point E. c. Determine the x and y components of the individual electric fields. d. Determine the Enety and Enety. www. e. Calculate the magnitude and angle of the resultant electric field at point E.

2. Three charges: q1, q2 & q3 are shown in the figure below. Point P is the upper right corner of the rectangle. Distance a is 25cm and distance b is 10cm. If q1 = q3 = +1.2nC and q2 = -0.9 nC: i. On your answer sheet, sketch the electric field at P due to q1, q2 & q3. ii. What is the magnitude of the net electric field y component at position P? ii. What is the magnitude of the net electric field x component at position P? iv. What are the magnitude and direction the net electric field at position P? What is the potential at point p, due to these three charges? v.

a. Two spheres of charges, q1 = (Z+ 35) mC and q2 = (Z+ 23) µC are placed at a distance of %3D %3D 8 mm. i. Determine the electric field on q1. ii. Determine the electric field on q2. iii. Compare your results from the part i. and ii., discuss and give conclusion.

Q3) Two point charges (Q = + 5.0 µC and Q2 = – 2.0 µ C) are held in place along the x-axis. Q, is at x1 = - 3.0 cm and Q, is at x2 = + 2.0 cm. a) Determine the electric field at (x, y) = (0,4.0 cm) in SI units. Represent your answer as a vector. Start with drawing a picture and setting up an appropriate coordinate system. b) Determine in what region along the x-axis it's possible for the electric field to be zero. There are three distinct regions: -o < x < x1, X1 < x < x2, and x2 < x < ∞ (this excludes x → ±∞ since the electric field is zero there). c) Now that you know in what region it's possible for the electric field to be zero, write out an expression you could solution to find exactly where this location is. Note: you DON'T have to solve it. d) Another charge (Q3 Newtons? Represent your answer as a vector. Hint: no need to apply Coulomb's law to Q3, you already know the electric field at this point. 4.0 µ C) is now placed at (x, y) = (0,4.0 cm). What is the net force on this…

5. Which statement correctly describes the charge distribution and the electric field in the vicinity of a negatively charged spherical conducting shell? A. Charges are uniformly distributed over the outer surface. There will be zero electric field inside the conductor, while just outside the conductor the electric field will be perpendicular to the surface and point inward. B. Charges are uniformly distributed over the outer surface. There will be zero electric field inside the conductor, while just outside the conductor the electric field will be perpendicular to the surface and point outward. C. Charges are uniformly distributed over the outer surface. Both inside and just outside the conductor the electric field points radially inward. D. Charges are uniformly distributed over the inner surface. Both inside and just outside the conductor the electric field points radially inward.