A Battery Has an Emf $\varepsilon = 12 \mathrm {~V}$ And an Internal Resistance

Multiple Choice

A battery has an emf $\varepsilon = 12 \mathrm {~V}$ and an internal resistance $r = 2.0 \Omega$ , as shown in the figure. When a current of $6.0 \mathrm {~A}$ is drawn from the battery, the terminal voltage of the battery $V _ { a b }$ is closest to

A) $2.0 \mathrm {~V}$ .
B) $10 \mathrm {~V}$ .
C) $0 \mathrm {~V}$ .
D) $+ 12 \mathrm {~V}$ .
E) $+ 24 \mathrm {~V}$ .