Question: (a) Use a sequence of source transformations and the lookback method to find the Thvenin equivalent at terminals A and B in Figure P (3=51).

(a) Use a sequence of source transformations and the lookback method to find the Thévenin equivalent at terminals A and B in Figure P \(3=51\).
5 A 15 7 )20 v (DIA 15 B + 5V (1)

(b) Then select a resistor to connect across A and B so that \(3 \mathrm{~V}\) appears across it.
(c) Suppose the 1-A current source is replaced by an ideal \(10-V\) voltage source with the plus side up. How does this alter the Thévenin circuit?

5 A 15 7 )20 v (DIA 15 B + 5V (1) 3A A

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