What is the strength of an electric field, E, that will balance the weight of a metal sphere with a mass of 1.8 g and a charge of 5 µC? (Use, g = 9.8 m/s?) %3D Provide the solution: x 103 N/C.

= 3.95 μC. Express your answer in vector form.) The figure below shows three charged spheres arranged along the y axis. (Assume q₁ = 2.90 μC and 92 91 75.0 cm -4.80 μC X 22.0 cm 92 (a) What is the electric field at x = 0, y = 2.80 m? N/C (b) What is the electric field at x = 2.80 m, y = 0? = N/C

Two circular metal plates of diameter 10cm are seperated by a distance of 1mm. One carries a positive charge and the other and equal negative charge. If the electric field between them is 5x10^5 N/C, find the charge on each plate. Sketch the electric field lines.

1. Two thin conducting plates, each 30 cm on a side, are situated parallel to one another and 5 mm apart. If 1.3.10¹2 electrons are moved from one plate to the other, what is the electric field between the plates? (a) In your notebook, draw the two conducting plates and draw the electric field lines between the plates. How is the electric field directed? v (b) Calculate the surface charge density of the plates. C/m 0= (c) What is the electric field between the plates? E= N/C 2

In the figure, a point charge 2.5 C is a distance d/2 directly above the center of a square of side 4.0 mm. What is the magnitude of the electric flux through the square?

The electric field between two parallel square metal plates is 240 N/C. The plates have an area of 0.64m2 on a side and are separated by 0.02m. What is the charge on each plate (assume equal and opposite)? Neglect edge effects. (Hint : The electric field in parallel plates is E 2, where o is the surface charge density ) €0 O 3.75 x 10-8 C O 1.36 x 10-8 C 8.83 x 10-8 C O 1.36 × 10-9 C

In the figure below, the electric field at the origin is zero. 1) If q1 is 1.00×10^−7 C, what is q2? (Express your answer to three significant figures.)