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Preparation

Read the notes in this lab and find the nodal voltages V_a, V_b, V_c and the source current I_S in the circuit of Figure 52, and record your calculations in Table 1.

You might find it convenient to use series and parallel transformations, starting from the right side of the circuit.

To start off, R₅ and R₆ are in series, with a total resistance of 2.7+3.3 = 6.0 k$\Omega$; this resistance is in parallel with R₄, with equivalent resistance

$$R_4 \parallel (R_5+R_6) = \frac{12\times 6}{12+6} = 4 \ {\rm k}\Omega$$

Keeping going like this to simplify the circuit and determine I_S. Now work the other way and determine the nodal voltages.

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