FIGURE 25-1 -Fig. 25-1 Shows an Electric Charge of Unknown Polarity Moving

FIGURE 25-1
-Fig. 25-1 shows an electric charge of unknown polarity moving inside a conducting wire. If the electric field in the conductor is oriented as shown, what is the sign of the charge?

A) The charge should be equal to zero.
B) The charge could be either positive or negative.
C) positive
D) negative
E) More information is needed to answer the question.