Answer:
Complete question
Which is true about the spacing of the streamlines in a wire?
A. Wide spacing represents faster random-motion velocities.
B. Wide spacing represents greater electric field vectors.
C. Wide spacing represents greater current densities.
D. Close spacing represents faster random-motion velocities.
E. Close spacing represents greater electric field vectors.
F. Close spacing represents greater current densities.
Explanation:
The streamline of the of a wire represent the current density.
Closing the space will make the field stronger and it will increase the movement of electron and the current density will increase.
Density of electric field lines is inversely proportional to the radius in the case of a single point charge.
So if the lines are closed together (i.e the radius reduces) the density of the electric field increase.
So both option E and F are correct.
E. Close spacing represents greater electric field vectors.
F. Close spacing represents greater current densities.
