Find Vfb and Vec in the circuit

Find V_{fb} and V_{ec} in the circuit.

Find Vfb and Vec in the circuit

Image from: Irwin, J. David., and R. M. Nelms. Basic Engineering Circuit Analysis, Tenth Edition. N.p.: John Wiley & Sons, 2010.


To figure out V_{fb}, we will write Kirchhoff’s voltage law around the fbcdef¬†loop (Forgot Kirchhoff’s voltage law?). One way to think of this is to imagine a wire connecting node f to node b, and thinking of that as the new loop.



To figure out Vec, we will write Kirchoff’s voltage law around the loop ecde.



This question can be found in Basic Engineering Circuit Analysis, 10th edition, chapter 2, question 2.25.


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