Multiple choice

The intrinsic carrier concentration of silicon sample of 300 K is 1.5 $\times$ 1016/m3. If after doping, the number of majority carriers is 5 $\times$ 1020/m3, the minority carrier density is

  1. 4.50 $\times$1011/m3
  2. 3.33 $\times$104/m3
  3. 5.00 $\times$1020/m3
  4. 3.00$\times$10-5/m3
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