railway RRB Technician Grade 1 Mock Test 2024 Electronic Devices Carriers in Semiconductors

The number of holes in N-type silicon with intrinsic value 1.5 × 1010/cm3 and doping concentration of 1017/cm3, by using mass-action law is

1
6.67 × 106/cc
2
4.44 × 10-25/cc
3
1.5 × 10-24/cc
4
2.25 × 103/cc
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