Question

1. A distribution of positive charge creates an E-field that fills the space around the distribution such that the the electric potential at x = 10 m has a bigger magnitude than at x = 20 m. Assume that the charge causing the field is all to the left of x = 0. Given this information, which of the following is not possible? (A). The E-field at x = 10 m is directed along the +x axis. (B). The E-field at x = 11 m is directed along the +x axis (C). The E-field at x = 10 m is directed along the -x axis (D). A non-zero E-field exists at x = 10 m

2. Determine the electric potential at the center of a ring of charge (Q = 4.3 nC, R = 0.1 m).
A). 419 v B). 387 v  C). 286 v D). 151 v

Answer 1