Chapter 8, Problem 3RQ

Refer to the circuit shown in Figure 8-2. Redraw the circuit and use the following values:

$\begin{array}{l}{\text{E}}_{\text{T}}\text{= 12 V}\hfill \\ {\text{R}}_{\text{1}}\text{= 270 }\Omega \hfill \\ {\text{R}}_{\text{2}}\text{= 510 }\Omega \hfill \\ {\text{R}}_{\text{3}}\text{= 470 }\Omega \hfill \\ {\text{R}}_{\text{4}}\text{= 330 il}\hfill \end{array}$

Assume that an ammeter indicates a total circuit current of 15 mA.

A voltmeter indicates the following voltage drops across each resistor:

$\begin{array}{l}\begin{array}{l}{\text{E}}_{\text{1}}\text{= 12 V}\\ {\text{ E}}_{\text{2}}\text{= 0 V}\end{array}\hfill \\ \begin{array}{l}{\text{E}}_{\text{3}}\text{= 7 V}\\ {\text{ E}}_{\text{4}}\text{= 5 V}\end{array}\hfill \end{array}$

What is the most likely problem with this circuit?