Q12Basic Electrical Engineering

To accurately find the potential differences $V_{CE}$ (Voltage between node C and node E) and $V_{AG}$ (Voltage between node A and ground G) in a DC network, a structured analytical approach is necessary:

• Step 1: Clearly identify the reference node (usually G for Ground, $0\text{V}$).
• Step 2: Formulate Nodal equations using KCL for nodes A, C, and E. Express the currents leaving these nodes in terms of $(V_{n}ode-V_{a}djacent)/Resistance$.
• Step 3: Alternatively, apply Kirchhoff's Voltage Law (KVL) by defining mesh currents. Solve the simultaneous equations to find the true branch currents.
• Step 4: Once currents or absolute node voltages are known, calculate the differences. $V_{CE}=V_C-V_E$. If G is ground, $V_{AG}$ is simply the absolute node voltage $V_A$.

(Note: As the specific diagram 'Fig.' is not provided in the prompt, numerical values cannot be derived, but this algorithm represents the RTU standard procedure for solving such networks).