Q1. Two positive point charges with the +q are located on the x axis. One is at

Question

Q1. Two positive point charges with the +q are located on the x axis. One is at x = -2.00 m and the other is at x = 2.00 m. (a) Determine the electric field at location of x=0, right in between the two charges. A. E is perpendicular to the x axis. B. E is zero C. Ex is positive. D. Ex is negative. E. Can?t be determined. (b) If the electric potential at infinity is defined to be zero, the electric potential at x=0 will be A. zero B. negative. C. positive. D. Can?t be determined. Q2. Two opposite point charges with same magnitude are located on the x axis. q1= - q at x=0, and q2= q at x=4.0 m. (a) Which one of the following is true? A. The E field is zero at x=2.0 m right at the center between these two charges. B. The E field may be zero at one point with finite distance to the left of the two charges. C. The E field may be zero at one point with finite distance to the right of the two charges. D. The E field is not zero for any finite value of x. (b) Which one of the following ?s true? A. The potential is zero at x=2.0 m and nonzero for any other finite value of x. B. The potential is not zero for any finite value of X. C. The potential may be zero at one point with finite distance to the left of the two charges. D. The potential be zero at one point with finite distance to the left of the two charges.

Explanation / Answer

1. a) B

b) C

2. a)D

b)A

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