Question

Nodal analysis is generally used to determine

• A. \( \text{Voltage} \)
• B. \( \text{Current} \)
• C. \( \text{Resistance} \)
• D. \( \text{Power} \)

Hint:

Remember the primary goal of major circuit analysis techniques:

• Nodal Analysis Solves for node voltages}. It's based on KCL.
• Mesh Analysis Solves for mesh currents}. It's based on KVL.

Both methods ultimately allow you to find any other electrical quantity in the circuit once the primary variables (voltages or currents) are known.

Answer 1

The Correct Option is A

Nodal analysis is a circuit analysis technique that focuses on finding the voltages at the nodes (junctions) of a circuit with respect to a reference node (usually ground). The steps involved in nodal analysis typically include: 
1. Choosing a reference node (ground). 
2. Assigning node voltages to the other independent nodes. 
3. Applying Kirchhoff's Current Law (KCL) at each independent node, expressing currents in terms of node voltages and resistances using Ohm's Law ($I = V/R$). 4. Solving the resulting system of linear equations to find the unknown node voltages. 
Once the node voltages are determined, other quantities like branch currents and power can be easily calculated using Ohm's Law and power formulas ($P=VI$, $P=I^2R$, $P=V^2/R$). 
Therefore, nodal analysis is primarily used to determine voltage.