Potential difference across a wire is increased what happens to the drift velocity of the free electrons
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Due to drift velocity of electrons current is flown from a conductor ( consider of. Length 'l' and cross section area 'a' ) then if we take one electron at one side of the conductor then it will move opposite to the electric field i.e from -ve to +ve in a single cell closed circuit with a constant acceleration qe/m where q and e are mass and charge of electron and e is magnitude of electric field
Now applying laws of motion
S =1/2 a t^2 since u =0 and a= qe / m and s=v*t Where v is drift velocity
also I=nqav
where v - drift velocity/ q - charge /a - area of cross section / v - drift velocity / I - current
so increase in temperature increase in I so electron collides more with positive lattice inside a conductor so we can also say that resistance of conductor increases with increment in temperature
Now applying laws of motion
S =1/2 a t^2 since u =0 and a= qe / m and s=v*t Where v is drift velocity
also I=nqav
where v - drift velocity/ q - charge /a - area of cross section / v - drift velocity / I - current
so increase in temperature increase in I so electron collides more with positive lattice inside a conductor so we can also say that resistance of conductor increases with increment in temperature
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