y, cm 91 = 1.0 x 10-6 C 92 =-4.0 x 10-6 C 93 = 5.0 x 10-6 C 3 e 92 1 93 x, cm 1 a) Find the resultant force on the charge q2 b) Find the electric field resultant on the charge q2 2. 2.

1) Uniform positive line charge is distributed along the x-axis from x = 0 to x = a. a) Calculate the x- and y-components of the electric field produced by the line charge disctribuion along the positive x-axis, where r > a. b) Calculate the force a point charge q would experience if placed on a location on the positive x-axis at r = a +r. c) Show that ifr >> a, the magnitude of the force is approximately Qq/4T€gr2. Comment on this result!

b)Determine the direction of the net force on Q3Q3 from Q1Q1 and Q2Q2.

3) a)What are the magnitude and direction of the force exerted on a 4.41 pC charge by a 184 N/C electric field that points due east? magnitude direction ---Select- v b) You charge a piece of aluminum foil (mass =7.46 g) by touching it to a charged rod. The charged rod gives the aluminum foil a charge of 13 µC. Your professor brings a charged plate over and tells you to put the aluminum foil on top of the plate. To your surprise the aluminum foil hovers motionless in the air above it! Calculate the value of the electric field from the charged plate (assume it is a uniform field and the aluminum foil is a point charge). magnitude N/C direction -Select-- v

Two charges are separated by a distance d = 1.0 m along the y-axis, bisected by the x- axis as shown. 91 X -22.5 Wrong 92 Let q₁ = +2.0 nC, and q2 = -3.0 nC. Point P is located on the x-axis, equidistant from each charge by a distance d. Determine the magnitude of the y-component of the net electric field at point P. Express your answer in N/C, to at least one digit after the decimal point. O

Physics II QI: Three charges are arranged in a triangle with side length L=2cm. All three charges equal 2nC. Find the net force (components, magnitude, and direction) on charge C. A Q2 : What is the magnitude of a point charge that would create an electric field of 1.00 N/C at points 1.00 m away?

qa zero qc O Along the line joining q and qa O Along the line joining q and qb Along the line joining q and qc O Along the line joining q and qd (a) If qa = qd and qc = qb, the net force of the charge +q is Ozero qb O along the +x direction. O along the -x direction. O along the +y direction. O along the -y direction. qd (b) If qa and qb are positive, and qc and qd are negative, and the magnitude of all charges is the same, the net force on the positive charge +q is X

Q3) Two identical conducting small spheres are placed with their centers 0.30 m apart. One is given a charge of 12.0 nC, and the other is given a charge of -18.0 nC. (a) Find the electric force exerted on one sphere by the other.

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A positive point charge is at the origin. What happens to the strength of the electric field if you double your distance from the origin? a) the field increases by a factor of two b) field decreases by a factor of two c) field increases by a factor of four d) field decreases by a factor of four