Consider two point charges q1 = -7e and q2 = 2e situated on the x-axis with q1 at the origin as shown in the figure below. Suppose that r12 = 3.36 µm and r2p = 4.87 µm. Then the net electric field at point P has a magnitude that is most nearly P• r2P

5.10 nC of charge is uniformly distributed along a thin rod of length L = 2.00 cm as shown in the figure. What is the magnitude of the electric field at point P, a distance r = 7.90 cm from the centre of the rod?

Four point charges have the same magnitude of 3.4 x 10-12 C and are fixed to the corners of a square that is 7.1 cm on a side. Three of the charges are positive and one is negative. Determine the magnitude of the net electric field that exists at the center of the square.

PROBLEM 2: Two charges q1 = +5 µC and q2 = +8.5 µC are separated by a distance of 15 cm. Point P is located along the line segment joining the two charges. How far is point P from q1, if the magnitude of the electric field at point P due to the two charges is equal to zero? Draw a sketch of the problem and label appropriately.

Three equal charges q = +2.00 nC lie along the x axis with one at the origin and the other two at x = ± 1.00 m, respectively, as shown. Point P is located at z = 1.00 m. P Determine the magnitude of the electric field at point P. Express your answer in N/C, to at least one digit after the decimal point.

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

Three charges, q1, q2, q3 are arranged in an equilateral triangle formation with edge length 1 m. If q1 = 2 x 10^-9 C, q2 = 4 x 10^-9 C, q3 = - 6*10^-9 C, what is the total strength of the electric field value at the center of the triangle?

Point charges q1=q2=6.91⨯10-9C are fixed on the y-axis at y = 85.9m and y = -85.9m. There is a charge q3 with 3.90⨯10-9 C at x=8.35m, y= -0.365 .  The point P is at x=8.35m, y=0. What is the vertical (y) component of the total electric field at P, due to all three charges in Newtons/Coulomb? (Use the convention that positive values indicate an upwards electric field and negative values indicate a downward force.) Calculate to 1 decimal place. You must draw and label a diagram.

Four identical charged particles (g = +10.2 µC) are located on the corners of a rectangle as shown in the figure below. The dimensions of the rectangle are L = 65.4 cm and W = 15.1 cm. W L b. (a) Calculate the magnitude of the total electric force exerted on the charge at the lower left corner by the other three charges. 44 Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. N