A positively charged ring of radius a is in a plane perpendicular to the x-axis and its center is at the origin located to be located. The value of the electric field of a point on the x-axis is as follows.
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A positively charged ring of radius a is in a plane perpendicular to the x-axis and its center is at the origin
located to be located. The value of the electric field of a point on the x-axis is as follows.


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- Two test charges are located in the xy plane. Charge q₁ = -3.950 nC and is located at x₁ = 0.00 m, y₁ = 0.7200 m. Charge 92 = 4.600 nC and is located at x2 = 1.100 m, y2 = 0.650 m. Calculate the x and y components, Ex and Ey, respectively, of the electric field Ĕ at the origin, (0, 0). The Coulomb force constant is 1/(4леo) = 8.99 × 10⁹ N.m²/C². Ex = N/C ㄢˋ Ey = = N/CA test charge of +3 µC is at a point P where an external electric field is directed to the right and has a magnitude of 4 x 106 N/C. If the test charge is replaced with another test charge of -3µC, what happens to the external electric field at P? (a) It is unaffected. (b) It reverses direction. (c) It changes in a way that cannot be determined.A particle of charge -q1 is at the origin of an x axis. (a) At what location on the axis should a particle of charge -36q1 be placed so that the net electric field is zero at x = 2.8 mm on the axis? (b) If, instead, a particle of charge +36q1 is placed at that location, what is the direction (relative to the positive direction of the x axis) of the net electric field at x = 2.8 mm?
- Four charged particles are located at the corners of a square of side length a = 30.0 cm, as shown. The unit charge q =+10.0μC. (a) What is the magnitude and direction of the electric field at the lower left corner?A non-conducting sphere 15.0cm in diameter has a total charge of 2.25µC distributed uniformly throughout its volume. Plot the magnitude of the electric field, E, as a function of the distance, r, from the center of the sphere, from r =0cm to r =30.0cm. (The graph must be madeon computer)An electric dipole consists of two charges, +4 μC and -4 μC, separated by a distance of 2 cm. Determine the electric field strength at a point on the axial line of the dipole, 4 cm away from its center.
- At what distance along the central axis of a uniformly charged plastic disk of radius R = 1.31 m is the magnitude of the electric field equal to 1/3 times the magnitude of the field at the center of the surface of the disk?Consider a charge configuration comprising two point sources, one carrying a positive charge and the other a negative charge. The magnitude of the negative charge is three times as large as the positive charge. Construct a careful sketch of the electric field around the configuration.