1. (a) The figure shows three circular arcs centered at the origin of a coordinate system. On each arc, the uniformly distributed charge is given in terms of Q = 3.28 µC. The radii are given in terms of R = 91.0 mm. What is the magnitude of the net electric field in N/C at the origin due to the arcs? 3R +9Q -1Q 2R +Q R

can you please ans (k)  & ( l)?

Three point charges are located on a circular arc as shown in the figure below. (Let r = 4.16 cm. Assume that the +x-axis is to the right and the +y-axis is up along the page.) +3.00 nC -2.00 nC 30.0° P 30.0° +3.00 nC (a) What is the total electric field at P, the center of the arc? magnitude 16622 v N/C direction to the right (b) Find the electric force that would be exerted on a -5.21 nC point charge placed at P. magnitude x N downwards x 3.9*10**-5 direction

What is the magnitude of the y component of the net electric field at the point A? The two charges and point A are each a distance of W from the origin. +y +Q В x+ |(0,0) 2W 2 W 2 W 2 O 4/ ZkQ w 2 O The y component of the net E field at A is zero. 2kQ W 2 O O

What is the charge density on the positively charged plate in C/m2?

Plastic beads can often carry a small charge and therefore can generate electric fields. Three beads are oriented such that 92 is between 9₁ and 93. The sum of the charge on 9₁ and 92 is 91 +92 = -8.3 μC, and the net charge of the system of all three beads is zero. E field lines What charge does each bead carry? μC 91 = 92 = 93 = 000 μC μC

y A Point Charge Q₁ = -0.1 μC is located at the origin. A. Find the Electric Field (magnitude and direction) at point P located at x = 8 m and y = 6 m. B. Find the value of Point Charge Q₂ located at x = 8 m and y = 0 m and Point Charge Q3 located at x = 0 m and y = 6 m that will cause the Electric Field to be zero at point P. C. Given Point Charges Q₁, Q2 and Q3 as determined above, Find the Electrostatic Potential at point P.

Positive charge Q = 7.8 n C  is spread uniformly along a thin insulating rod of length L = 14.5 cm. a) Find the magnitude and direction of the electric field at point P, at distance R = 6.00 cm from the rod along its perpendicular bisector. b) Explain how the direction of the field is determined.

34. Go The drawing shows two situations in which charges are placed on the x and y axes. They are all located at the same distance of 6.1 cm from the origin O. For each of the situations in the drawing, determine the magnitude of the net electric field at the origin. -5.0 μC +1.0 µC +2.0 µC -3.0 μC +4.0 μ -1.0 μC +6.0 μC (b) (a)

A uniformly charged rod of length L = 1.2 m lies along the x-axis with its right end at the origin. The rod has a total charge of Q = 6.8 μC. A point P is located on the x-axis a distance a = 1.2 m to the right of the origin. A: Calculate the magnitude of the electric field E in kilonewtons per coulomb (kN/C) at point P due to the charged rod.  B: Write an equation for the electric field dE at point P due to the thin slide of the rod dx. Give your answers in terms of the variables Q, L, x, a, dx, and the Coulomb constant, k. Notice that the coordinate x will be less than zero over the length of the rod.