(Solved): For the diagram above, the following voltages are specified: VA=3VVD=1VVa=1V The voltag ...

For the diagram above, the following voltages are specified: $\begin{array}{l}{V}_A=3V\\ V_D=1V\\ V_a=1V\end{array}$ The voltages are specified using the labeled references. $V_a$ is the value of the voltage potential at node a with respect to a ground reference node. $V_B$ is the voltage drop across a particular element, it is the change in voltage from node $a$ to node $b$. Find the value of $V_B$ in volts and enter it in the box below. Omit the units from your answer. For example, if the answer is $10\mathrm{V}$ enter 10.