Yeah, I resit it and I found it easier than prior papers. I got SSS for particle X.
What did people do to find the resistance of the potato? I've a feeling my method wasn't right, but i'd like to see other peoples methods. What I did was calculate the difference between the given emf and the first given voltage. I presumed this would give me the lost volts in the cell. I then used ohms law to find the resistance by dropping a line from the first voltage to get the current for the equation. In the exam all the numbers were nice and round, so I thought I was on the right track. I got 3.3x10^3 ohms.