Two point charges are fixed on the y axis: a negative point charge q₁ = -32 μC at y₁ = +0.21 m and a positive point charge q2 at y2 = +0.38 m. A third point charge q = +8.2 µC is fixed at the origin. The net electrostatic force exerted on the charge q by the other two charges has a magnitude of 28 N and points in the +y direction. Determine the magnitude of 92.

An infinite line of positive charge lies along the y axis, with charge density  ? = 2.20 µC/m.  A dipole is placed with its center along the x axis at  x = 23.0 cm.  The dipole consists of two charges ±10.0 µC separated by 2.00 cm. The axis of the dipole makes an angle of 40.0° with the x axis, and the positive charge is farther from the line of charge than the negative charge. Find the net force exerted on the dipole.

The figure below shows three positively charged particles at three corners of a rectangle. The particle at upper left has a charge q1 = 4.00 nC, the one at the lower left has a charge of q2 = 5.00 nC,and the one at lower right has a charge q3 = 6.00 nC. The rectangle's horizontal side has length x = 5.00 cm and its vertical side has length y = 3.50 cm. Three positive charges lie at three of the corners of a rectangle of horizontal side length x and vertical side length y < x. An charge labeled q1 is at the upper left corner. A charge labeled q2 is at the lower left corner. A charge labeled q3 is at the lower right corner. (a)What is the electric potential (in V) at the upper-right corner of the rectangle? (Assume the zero of electric potential is at infinity.) ______V (b)What would be the potential (in V) at the upper-right corner if the charge q2 at lower left was−5.00 nC instead? _____V

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 6.60 cm from the origin O. For each of the situations in the drawing, determine the magnitude of the net electric field at the origin. +2.0 μC (a) E = i (b) E = i –5.0 μ.C (a) -3.0 μC +4.0 μ C +1.0 μC +6.0 μ.C (b) -1.0 μC