6. The electric field strength midway between a pair of oppositely charged parallel plates is 3.0 x 10° N/C. Find the magnitude of the electric field midway between this point and the positively charged plate.

Four point charges have the same magnitude of 1.9 × 10-12 C and are fixed to the corners of a square that is 4.5 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. Number i ! Units N/C

1. A particle has charge -3.00nC. a) Find the magnitude and direction of the electric field due to this particle at a point 0.250m directly above it. b) At what distance from this particle does its electric field have a magnitude of 12.0 N/C?

What is the magnitude of the electric field at a point that is a distance of 3.0 cm from the center of a uniform, solid ball of charge, 5.0 µC, and radius, 8.0 cm?     3.8 x 106 N/C     5.3 x 106 N/C     6.8 x 106 N/C     2.6 x 106 N/C     9.8 x 106 N/C

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

CQ3: A proton moves through a uniform electric field of magnitude 7.0 N/C. The arrows below point in the direction of the electric field. The path of the charge is shown in blue. Ē = 7(-ĵ)N/C P 3 AVEO 1.9 m 45° P2 450 1.6 m Which of the following is the correct expression for AV? 450 AX11 11 AKI A) AV = -(7N/C)(1.9m) cos(45°) B) AV = −e(7N/C)(1.9m)cos(45°) c) AV = −(7N/C)(1.9m)–(7N/C)(1.6m) D) AV = −e(7N / C)(1.9m) – e(7N/C)(1.6m) E) AV = -(7N/C)(1.9m) cos(45°)-(7N/C)(1.6m) 26 AX AV=- E• AX₁1 - 9

Four charges are placed on the corners of a square of side 2.0 m as shown. The four charges charges are: Q₁ = +1.0 μC, Q₂ = +3.0 μC, and Q3 = Q4 = +2.0 μC. What is the magnitude of the electric field at point P at the center of the square? Express your answer to the nearest N/C.

3. A uniform electric field Eis directed along the x-axis between two parallel plates of charge separated by 10 cm. A +20 µC point charge of mass 2 x 10-1ºg is released from rest at a point A next to the positive plate and accelerates to a point B next to the negative plate. Find the speed of the particle at B. 10 ст

A uniform electric field is directed upward and has a magnitude of 5 N/C. What are the magnitude and direction of the force on a charge of  −7 C  placed in this field? magnitude     ? N direction    up,or down

A solid metal sphere of radius 0.600m carries a net charge of 0.150 nC. Find the magnitude of the electric field at a point 0.100 m outside the surface of the sphere. Required to answer. Single choice.   a. 3.0 x 10^5 Nm^2/C b. 3.4 x 10^5 Nm^2/C c. 3.3 x 10^-6 Nm^2/C d. 4.3 x 10^6 Nm^2/C