In 2004 question 8(c) the paper makes reference to a magnetic induction of 5.0 mT but then in the marking instructions it is subbed in as 5 * 10^(-5), and then the calculation is done as though it were 5 * 10^(-6). Am I missing something fairly big or has the infallible SQA made a mistake? :P
(To clarify what I did, I subbed it in as 0.0050 and got an answer in the form X * 10^(-9) whereas the SQA's answer is * 10^(-6), but their calculation gives * 10^(-7)...)