A 40- $\Omega$ Resistor Is Connected to A $12 - \Omega$ Resistor and This Combination Is Connected to an Ideal Dc

Multiple Choice

A 4.0- $\Omega$ resistor is connected to a $12 - \Omega$ resistor and this combination is connected to an ideal dc power supply with voltage $V$ as shown in the figure. If the total current in this circuit is $I = 2.0 \mathrm {~A}$ , what is the value of voltage $V$ ?

A) $1.5 \mathrm {~V}$
B) $2.0 \mathrm {~V}$
C) $6.0 \mathrm {~V}$
D) $8.0 \mathrm {~V}$
E) $3.0 \mathrm {~V}$