If there are (N-2+3) Node-Voltage equations then the number of nodes in the circuit are __________(a) N+2(b) N+1(c) N(d) N-1The question was posed to me in an international level competition.This intriguing question comes from The Node-Voltage Method and Dependent Sources and Some Special Cases topic in section Techniques of Circuit Analysis of Electric Circuits

If there are (N-2+3) Node-Voltage equations then the number of nodes i

1.	If there are (N-2+3) Node-Voltage equations then the number of nodes in the circuit are __________(a) N+2(b) N+1(c) N(d) N-1The question was posed to me in an international level competition.This intriguing question comes from The Node-Voltage Method and Dependent Sources and Some Special Cases topic in section Techniques of Circuit Analysis of Electric Circuits
Answer» Correct ANSWER is (a) N+2 To explain I would say: If there are n nodes then n-1 nodal equations are REQUIRED to DESCRIBE the circuit. So, GIVEN N-2+3 i.e. N+1 nodal equations and it implies N+2 nodes.

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