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## Homework Statement

I don't quite understand how to read circuit diagrams, so I'm not sure how to find the equivalent resistance in some cases.

What is the equivalent resistance of circuits A and B?

I drew a picture to help me explain what I'm talking about:

## Homework Equations

## The Attempt at a Solution

I know circuit B is definitely in parallel, so the equivalent resistance is 1/R = 1/R1 + 1/R2.

But is circuit A in parallel, too? I think it is but I'm not 100 % sure.