A test charge of +2 nC is place at a point P where the electric field due to other charges is directed upwards. The electric field has a magnitude of 100 N/C. The test charge is replaced with a -8 nC charge. What happens to the (1) magnitude and (ii) direction of the electric field at point P now? Neglect gravity. E P O (1) 800 N/C; (ii) upwards O (i) 100 N/C; (ii) downwards O (1) 400 N/C; (ii) downwards O (i) 25 N/C; (ii) downwards O (i) 100 N/C; (ii) upwards O None of the answer choices is correct.

A test charge of +2 nC is place at a point P where the electric field due to other charges is directed upwards. The electric field has a magnitude of 100 N/C. The test charge is replaced with a -8 nC charge. What happens to the (1) magnitude and (ii) direction of the electric field at point P now? Neglect gravity. E P O (1) 800 N/C; (ii) upwards O (i) 100 N/C; (ii) downwards O (1) 400 N/C; (ii) downwards O (i) 25 N/C; (ii) downwards O (i) 100 N/C; (ii) upwards O None of the answer choices is correct.

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter24: Gauss’s Law

Section: Chapter Questions

Problem 24.46P: A thin, square, conducting plate 50.0 cm on a side lies in the xy plane. A total charge of 4.00 108...

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A thin, square, conducting plate 50.0 cm on a side lies in the xy plane. A total charge of 4.00 108 C is placed on the plate. Find (a) the charge density on each face of the plate, (b) the electric field just above the plate, and (c) the electric field just below the plate. You may assume the charge density is uniform.
Three charged particles are located at the corners of an equilateral triangle as shown in Figure P19.9. Calculate the total electric force on the 7.00-C charge.
The electric field 10.0 cm from the surface of a copper ball of radius 5.0 cm is directed toward the ball's center and has magnitude 4.0102 N/C. How much charge is on the surface of the ball?
A rod 14.0 cm long is uniformly charged and has a total charge of 22.0 C. Determine (a) the magnitude and (b) the direction of the electric field along the axis of the rod at a point 36.0 cm from its center.
Two solid spheres, both of radius 5 cm, carry identical total charges of 2 C. Sphere A is a good conductor. Sphere B is an insulator, and its charge is distributed uniformly throughout its volume. (i) How do the magnitudes of the electric fields they separately create at a radial distance of 6 cm compare? (a) EA EB = 0 (b) EA EB 0 (c) EA = EB 0 (d) 0 EA EB (e) 0 = EA EB (ii) How do the magnitudes of the electric fields they separately create at radius 4 cm compare? Choose from the same possibilities as in part (i).
aA plastic rod of length = 24.0 cm is uniformly charged with a total charge of +12.0 C. The rod is formed into a semicircle with its center at the origin of the xy plane (Fig. P24.34). What are the magnitude and direction of the electric field at the origin? Figure P24.34
Consider the charge distribution shown in Active Figure 19.31. (i) What are the charges contributing to the total electric flux through surface S? (a) q1 only (b) q4 only (c) q2 and q3 (d) all four charges (e) none of the charges (ii) What are the charges contributing to the total electric field at a chosen point on the surface S? (a) q1 only (b) q4 only (c) q2 and q3 (d) all four charges (e) none of the charges Active Figure 19.31 The net electric flux through any closed surface depends only on the charge inside that surface. The net flux through surface S is ql/0, the net flux through surface S is (q2 + q3)/0, and the net flux through surface S is zero.
(a) Find the magnitude and direction of the electric field at the position of the 2.00 C charge in Figure P13.13. (b) How would the electric field at that point be affected if the charge there were doubled? Would the magnitude of the electric force be affected?
Is it possible for a conducting sphere of radius 0.10 m to hold a charge of 4.0 C in air? The minimum field required to break down air and turn it into a conductor is 3.0 106 N/C.
A -4.00 nC point charge is at the origin, and a second -5.00 nC point charge is on the x-axis at x = 0.800 m. (a) Find the electric field (magnitude and direction) at point on the x-axis at x = 0.200 m. (b) Find the electric field (magnitude and direction) at point on the x-axis at x = 1.20 m. (c) Find the electric field (magnitude and direction) at point on the x-axis at x = -0.200 m.
A positive charge, q = +20 nC, is on the y-axis at y = +4.00 cm. (a) Determine the magnitude and (b) direction of the electric field at the origin.
A (negative) charge of -20 nC is placed at the origin of a coordinate system. What is magnitude and direction of the electric field at a point 1 meter to the right of the origin? O 0 N/C since no charge is at that point. O 90 N/C to the right O 180 N/C to the right 180 N/C to the left