MCQ Practice Question
For the equations 5V1-2V2=6 and -2V1+4V2=2, the node voltage V1 is?
Correct Answer: B. 1.75 V
Explanation: Solving simultaneously: the second equation gives V1=2V2-1. Substitution yields V2=1.375 V, hence V1=1.75 V.
Reference: Standard network theory: nodal matrix solution numerical
