Jee Main
Electronic Devices
JEE Main 2021 (Online) 25th July Evening Shift
INTEGER+4 / -12021
In a semiconductor, the number density of intrinsic charge carries at 27\(^\circ\)C is 1.5 \(\times\) 1016/m3. If the semiconductor is doped with impurity atom, the hole density increases to 4.5 \(\times\) 1022/m3. The electron density in the doped semiconductor is ___________ \(\times\) 109/m3.