An electric dipole consists of charges +e and -e separated by 0.84 nm. It is in an electric field of strength 2.20 x 106 N/C. The (imaginary) line connecting the two charges forms a 31° angle with the electric field. (a) What is the net force on the electric dipole? (b) What is the net torque on the electric dipole? N.m

An electric dipole consists of charges +e and -e separated by 0.84 nm. It is in an electric field of strength 2.20 x 106 N/C. The (imaginary) line connecting the two charges forms a 31° angle with the electric field. (a) What is the net force on the electric dipole? (b) What is the net torque on the electric dipole? N.m

Physics for Scientists and Engineers with Modern Physics

10th Edition

ISBN:9781337553292

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter22: Electric Fields

Section: Chapter Questions

Problem 19P: Three point charges are located on a circular arc as shown in Figure P22.19. (a) What is the total...

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Three point charges are located on a circular arc as shown in Figure P22.19. (a) What is the total electric field at P, the center of the arc? (b) Find the electric force that would be exerted on a 5.00-nC point charge placed at P. Figure P22.19
A uniformly charged rod of length L and total charge Q lies along the x axis as shown in Figure P23.6. (a) Find the components of the electric field at the point P on the y axis a distance d from the origin. (b) What are the approximate values of the field components when d L? Explain why you would expect these results. Figure P23.6
A point charge of 4.00 nC is located at (0, 1.00) m. What is the x component of the electric field due to the point charge at (4.00, 2.00) m? (a) 1.15 N/C (b) 0.864 N/C (c) 1.44 N/C (d) 1.15 N/C (e) 0.864 N/C
(a) What is the electric field 5.00 m from the center of the terminal of a Van de Graaff with a 3.00 mC charge, noting that the field is equivalent to that of a point charge at the center of the terminal? (b) At this distance, what force does the field exert on a 2.00 C charge on the Van de Graaff’s belt?
Three charged spheres are suspended by nonconducting light rods of length L = 0.625 m from the point O. The rods are fixed in position so that the middle rod is vertical and the rods on the left and right make an angle of 30.0 with the vertical (Fig. P24.50). a. What is the total electric field due to the charged spheres at point O? b. What is the electric force on a particle with charge q = +5.00 C placed at point O? FIGURE P24.50
A charged cork ball of mass m is suspended on a light string in the presence of a uniform electric field as shown in Figure P22.33. When E=Ai+Bj, where A and B are positive quantities, the ball is in equilibrium at the angle . Find (a) the charge on the ball and (b) the tension in the string. Figure P22.33 Problems 33 and 34
The infinite sheets in Figure P25.47 are both positively charged. The sheet on the left has a uniform surface charge density of 48.0 C/m2, and the one on the right has a uniform surface charge density of 24.0 C/m2. a. What are the magnitude and direction of the net electric field at points A, B, and C? b. What is the force exerted on an electron placed at points A, B, and C? FIGURE P25.47
Find an expression for the magnitude of the electric field at point A mid-way between the two rings of radius R shown in Figure P24.30. The ring on the left has a uniform charge q1 and the ring on the right has a uniform charge q2. The rings are separated by distance d. Assume the positive x axis points to the right, through the center of the rings. FIGURE P24.30 Problems 30 and 31.
Three identical charges (q = 5.0 C.) lie along a circle of radius 2.0 m at angles of 30, 150, and 270, as shown in Figure P15.33 (page 524). What is the resultant electric field at the center of the circle? Figure P15.33
A positively charged disk of radius R and total charge Qdisk lies in the xz plane, centered on the y axis (Fig. P24.35). Also centered on the y axis is a charged ring with the same radius as the disk and total charge Qring. The ring is a distance d above the disk. Determine the electric field at the point P on the y axis, where P is above the ring a distance y from the origin.
A small block of mass m and charge Q is placed on an insulated, frictionless, inclined plane of angle as in Figure P22.31. An electric field is applied parallel to the incline. (a) Find an expression for the magnitude of the electric field that enables the block to remain at rest. (b) If m = 5.40 g, Q = 7.00 C, and = 25.0, determine the magnitude and the direction of the electric field that enables the block to remain at rest on the incline. Figure P22.31