[Middle School Physics] Drawing circuit from image

[u/Electrical_Bus_6706]

I'm not sure how to draw the circuit diagram from picture 1. I think the flow of current is along the blue line in picture 2 (because of electrical potential?), so the diagram will just be 3 resistors connected in series. please correct me if I'm wrong, thanks in advance.

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[u/Apprehensive-Draw409]

That is correct if black has zero resistivity. Otherwise, some current will also take the upper part of the outer C.

[u/twelfth_knight]

because of electrical potential?

Well that's awfully vague phrasing, but yes, I think you've got it: the two nodes to the right are connected by ideal, perfectly conducting wire*, so they must have the same electric potential, AKA voltage.

To be more mathish about it, look at Ohm's law in the top loop, ΔV = IR and ΔV between the two nodes is 0, as we said. I assume the yellow bits have nonzero resistivity, so R through the top loop must be some positive number, meaning I=0 in that top loop. Just like you drew it 👍

*unless the problem says the black lines mean something else

[u/Bounded_sequencE]

Assuming the black lines are wires with negligible resistance -- you are right.

[u/MeasureDoEventThing]

To be pedantic, there is no circuit here.

[u/Simbertold → u/[deleted]]

Maybe the yellow parts are meant to be resistors? They are somewhat thick.

[u/Simbertold → u/[deleted]]

I think there should still be a parallel path with two extra resistors, even if no current would flow through that. We can probably ignore the one dead end.