Three Resistors with Resistances Of $2.0 \Omega , 6.0 \Omega$ , And

Multiple Choice

Three resistors with resistances of $2.0 \Omega , 6.0 \Omega$ , and $12 \Omega$ are connected across an ideal dc voltage source $V$ as shown in the figure. If the total current through the circuit is $I = 2.0 \mathrm {~A}$ , what is the applied voltage $V$ ?

A) $2.0 \mathrm {~V}$
B) $2.7 \mathrm {~V}$
C) $6.0 \mathrm {~V}$
D) $3.0 \mathrm {~V}$
E) $1.5 \mathrm {~V}$