A potential barrier of 0.3V exists across a P-N junction (a) If the depletion region is 1 `mum` wide, what is the intensity of electric field in this region ? (b) An electron with speed `5xx 10^(5)` m/s approaches this P-N junction from N-side, what will be its speed on entering the P-side ?

Explanation

(a)`3xx10^(5)`v/. ,(b)`3.8xx10^(5)` m/s