Re: capacitors in series - pitfalls?
SI is very consistent, unless you try to impose your own ideas about consistency. It is best to stick with 'k' for 1000, as then that leaves 'K' for 1024 (=2^10) as used in IT. (There is an ambiguity then for 'M' which SI uses for 10^6 and IT uses for 2^20, similarly 'G').
The revision guide is appalling, but it demonstrates the modern problem of rigid marking schemes: being brighter than the examiner can lose you marks.
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