The Attempt at a Solution
My question is about the solution in the picture. According to the solution, v*8/(8+16) and v*8/(4+8) equal both respective sides of the circuit A and B. My question is, why is this true? Why couldn't you take v*4/(8+16) and v*8/(4+8) for example? Why does it have to be like they wrote it? I thought the voltage divider rule was to find the voltage between two parallel resistors, but in this case it seems to be finding the voltage in two parallel resistors independently? I didn't think this was possible.
Also, is the 4 and 8 on the right side parallel or in series? Does the 1 ohm resistor make them in parallel? I assume it does. Why wouldn't the solution be something like...
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