Question

What is the drift velocity for the electrons in a calculator when an electric field of strength `200 V//m` is applied on it and mobility of electrons is `4.5xx10^(-6) m^(2) V^(-1) s^(-1)`?

Answer 1

Here, `E=200 V//m`
`mu=4.5xx10^(-6) m^(2) V^(-1) s^(-1)`
Drift velocity, `v_(d)=mu E=(4.5 xx 10^(-6))xx200`
`=9.0 xx10^(-4) ms^(-1)`