## Thursday, 6 June 2013

### Video Solutions for GATE 2007 ECE : One Mark Questions (Electron Devices)

1. The electron and hole concentrations in an intrinsic

semiconductor are ni per cm3 at 300oK. Now, if acceptor

impurities are introduced with a concentration of NA per cm3

(where NA  > ni ), then electron concentration per cm3

at 300oK will be

2.  In a P+N junction diode under reverse bias, the magnitude of
electric field is maximum at

3. The correct full wave rectifier circuit is :