http://www.xtremepapers.com/papers/...and AS Level/Physics (9702)/9702_w04_qp_2.pdf
The Attempt at a Solution
Im not sure why the line which is supposed to be drawn passes through the top right corner.
Also, im not sure how to go about the second part.. how to find the resistance at C? I dont know the PD across it. What am i missing?