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Branch, Loop and Node Analyses - Engineering

Q1:

Find the node voltage VA.

A 6 V

B 12 V

C 4.25 V

D 3 V

ANS:C - 4.25 V

@All.

Here is the soltion.
Millman's Theorem.
(Σ E/R)/Σ 1/R.

Vab = (12/49 + 0/24 +6/80) / (1/49 + 1/24 + 1/80).
Vab = 4.2896 V.