XN b+ XH

All the charges have the same magnitude of 3.20 microC. What is the magnitude of the electric field if the value of the distance r is 7.14 cm.

Three charges are placed on the corners of an isosceles triangle, with side length d = 0.050 m, as indicatedin the figure. Two of the charges are positive and one is negative. The magnitude of each charge is thesame, and is given by q = 1.34 μC. Calculate the magnitude and direction (relative to the given set ofaxes) of the electric field at point P, exactly halfway between the negative charge and one of the positivecharges

Point charges are placed at the four corners of a rectangle as shown below: q1 = 2.5 ✕ 10−6 C, q2 = −2.5 ✕ 10−6 C, q3 = 4.2 ✕ 10−6 C, and q4 = 1.7 ✕ 10−6 C. What is the electric field at P (in N/C)? (Express your answer in vector form. Assume that the +x-axis is to the right and the +y-axis is up along the page.) E = ________ N/C

Calculate the strength and direction of the electric field, E, due to point charge of 2.7 nC at a distance 5.6 mm from the charge. For the direction, consider the line joining the point charge and point at the distance 2.4mm. The direction on this line away from the charge is positive and the direction towards the charge is negative. What force does the electric field found in the previous example exert on a point charge of −2.3·10^-8 C?

Spheres A and B have the same initial positive charge. The magnitude of the repulsive electric force between the two spheres is 144 N when separated by a distance of 0.03 m. (a) Find the initial charge . (b) The spheres are then allowed to touch each other and then separated. Find the electric force between them if the radius of sphere A is three times that of sphere B. What is the magnitude and direction of the electric field at 0.25 m from a ? Find the flux through the top, left, and right sides of a cube of side 0.5 m when placed in a horizontal uniform electric field of 8.0 N/C directed to the right.

What is the magnitude and direction of the force exerted on a 3.50 µC charge by a 250 N/C electric field that points due east?

Two point charges of 8.85 x 10° C are situated in a Cartesian coordinate system. One charge is at the origin while the other is at (0.72, 0) m. What is the magnitude of the net electric field at the location (0, 0.77) m?

A small plastic bead has a mass of 4.16 g and a charge of -16.8 µC. It levitates, motionless, when placed in a uniform electric field perpendicular to the ground. What is the magnitude of the electric field (in N/C)? N/C What is the direction of the electric field? O upward O downward O east O west

Charges X (+5 microCoulombs), Y (+5 microCoulombs), and Z (-5 microCoulombs) are located in a straight line with point Y midway between charges X and Z.  Charge X is on the left, Y in the middle, and Z on the right.  Where along the line that passes through the three points could the Electric Field Strength be Zero?  (Include all possible locations.)