Average force on an electron in a wire
Hey, just did a 25 question multiple choice paper and this was the only one that I got wrong. Was hoping someone could enlighten me.
I got the force acting on the conductor:
Originally Posted by AQA PHYA4/1 Jan 2010
So figured since that is the force on the entire conductor, then the force on one electron would be the force divided by the number of electrons:
But the answer is
I know I am neglecting the cross-sectional area but not sure where it would come in.