Question

1. Four charges reside on the corners of a square. Three of the charges are positive: 4 muC, 1 muC, and 4 muC. The 4 muC charges are at diagonal corners. The final charge is negative: -3muC. Determine the magnitude of the E-field found at the center of the square if each side has a length of 2.0 m. A) 20091 N/C B) 63002 N/C C) 55210 N/C D) 18108 N/C E) 2299 N/C

2. Which of the following is true concerning the strength of the E-field in front of an infinitely large, uniformly charged, two-dimensional surface? A) The field is uniform and based on the charge density B)The field is non-uniform and independent of the charge density. C) The field is uniform and is independent of the charge density. D) The field is non-uniform and based on the charge density.

3. An electron is positioned 0.5 m above the center of a square plane. The plane has a length of 1.0 m on all 4 sides. Determine the magnitude of the flux through the plane. A)2.0 X 10^-8 Nm^2/C B) 3.0 X 10^-9 Nm^2/C. C) 4.9 X 10^-9 Nm^2/C D) 6.8 X 10^-8 Nm^2/C

Answer 1