cse • paper_2 • solid_state_electronicscse-1999-subject-08-003
Room temperature — UPSC CSE 1999 Physics PYQ
Buy PYQ Solution Manual →Phosphorous is doped in a silicon wafer. The impurity concentration is 10^{13}\text{ per cm}^3. If all the donors are active calculate its resistivity at room temperature. The mobility of electrons is 1250\text{ cm}^2/\text{V-s}.
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