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ssar
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Homework Statement
This should be quite simple for most of you although I can't understand it.
Circuit is attached below
Homework Equations
The Attempt at a Solution
The answer is 20ohms, although I would have done R1+R3 + R4//R5 which would get 25ohms.
The previous question was to find Rab and Rab = 25ohms.
How do i view the circuit to get 20ohms? I'm aware it would just be R1+R3, but why can't you do it my way?
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