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## Main Question or Discussion Point

for an electron, randomly moving inside a conductor , having applied an external electric field we have those electrons moving with a net speed called drift speed , against the direction of field.

so initially as electrons are moving randomly we consider their initial velocity o

and after time t =at

where a = acc. of electrons = e(field)/mass of electron

t = mean time between consecutive collisions of electrons

courtesy PHYSICS by halliday resnick krane vol 2

but i don't understand why don't we average the initial and final speed of electrons ie

drift speed = (0 + at)/2

??

so initially as electrons are moving randomly we consider their initial velocity o

and after time t =at

where a = acc. of electrons = e(field)/mass of electron

t = mean time between consecutive collisions of electrons

courtesy PHYSICS by halliday resnick krane vol 2

but i don't understand why don't we average the initial and final speed of electrons ie

drift speed = (0 + at)/2

??

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