$8)(25)$ A circuit is shown below. It is made of two different diameter wires. Wire $1$ has a diameter that is twice that of Wire $2.$ The length of each wire is $10$ cm $.$

a$.$ How does the drift speed of the electrons compare in each of the wire segments?

b$.$ Sketch the electric field $($roughly to scale$)$ in each section of the wire.

c$.$ Sketch the charge distribution in this system.

d$.$ There are $3$ compasses that were initially pointing north $[$towards the top of the page$]($and the wire was lined up with that$).$ How do they point when the battery is hooked up$?$ Be sure to compare.

How do the potential differences over each of the $3$ wire egments compare? Explain.