The people in the UK who check the quality of public examinations have put a service online called The Exams Doctor. They offer advice, wisdom and sage words for those in need.
For those of you who want to geek out at the boundary of the syllabus (which refers to a solar cell in section 59 about the internal resistance of a cell, eg. a solar cell) here are a couple of bits and pieces to read.
Please use these wisely. Do not kid yourself thinking that you can do a question by looking up the answer. If you do not know how to get the answer that you see then email me and we can work through it together.
