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I was reading about source transformations and came across an example where there was a change in the order of two series elements, is this always possible? The same for in parallel elements but that makes sens since they have the same voltage. enter image description here

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  • \$\begingroup\$ As long as you don't care about a node voltage with respect to ground, which often does not matter, then yes you can swap series elements like this. What difference do you think it makes to \$v_m\$? Do you think it changes the voltage drop across the \$4\:\Omega\$ resistor? \$\endgroup\$
    – jonk
    Commented Oct 18, 2018 at 7:59

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Yes, you can always swap the order of two series elements and the circuit will still perform identically.

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