# Problem with circuit

1. Sep 13, 2014

### RiceKernel

1. The problem statement, all variables and given/known data

2. Relevant equations
Req =R1 + R2

Req = (R1*R2)/(R1 +R2)

3. The attempt at a solution

No idea how to do that . Was thinking maybe making the 3 and 2 ohms resistors equivalent (assuming parallel). I have no idea what to do with the top wire . How do I simplify this circuit?

2. Sep 13, 2014

### Staff: Mentor

The 2 and 3 Ohm resistors are not in parallel (their upper ends are not connected).

Hint: Re-draw the circuit with the 5 and 20 Ohm resistors in a vertical position.

3. Sep 13, 2014

### Staff: Mentor

You're allowed to re-arrange the components on the page so long as all the connections remain the same. Take a close look at how the 5 and 20 Ohm resistors are connected. Better yet, move terminals a and b to the other end of the circuit. You can do this because a continuous wire path is all the same node, and anything connected to it can be moved to another point on the same conductor.

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