(3) 67.8 mA
The electric field in rod
![](https://www.sarthaks.com/?qa=blob&qa_blobid=11221033859442208388)
Let ve and vh be the average drift speed accquired by electron and holes respectively under the applied electric field. Let μe and μn be mobility of electron and hole. Then
![](https://www.sarthaks.com/?qa=blob&qa_blobid=4393453916169180321)
The current, Ie ; due to motion of electrons is
![](https://www.sarthaks.com/?qa=blob&qa_blobid=2975070967567348411)