Conventional current flow makes calculations easier

摘要

I agree with Col Hodgson (Mailbag, April 2017) that the current convention should not be changed. I started work as a Technician in Training with the Postmaster General many years ago. Our lecturers used the negative to positive convention, presumably because conventional current flow was confusing for their students when electrons flow in the opposite direction. For example, when explaining how a valve works, they had to say that the electrons flow from the cathode to the anode.