I'm not sure of the exact rules.
The paper isn't secure/secret anymore however it won't be available for download for a month or so and then will only be available for download by teachers of Edexcel. Past papers are kept 'secure' for around 12 months after they were sat. Mainly so that they can...
Unfortunately I can't share the question.
It involves a photocell with a constant terminal pd as load resistance decreases.
Terminal pd then falls off as output approaches emf.
It is Q13 on Edexcel Paper 1.
I am getting two different answers for the final part (internal resistance) depending...