The Number Density N of Conductions Electrons, the Resistivity $\infty$ Are Given Below for Five Materials

Multiple Choice

The number density n of conductions electrons, the resistivity , and the temperature coefficient of resistivity $\infty$ are given below for five materials.Which is a semiconductor?

A) n = 10²⁹ m^-3, 11ef175a_747e_fecd_8934_9df8412bf74a_TB7453_11 = 10^-8 $\Omega$ . m, $\infty$ = +10^-3 K^-1
B) n = 10²⁸ m^-3, 11ef175a_747e_fecd_8934_9df8412bf74a_TB7453_11 = 10^-9 $\Omega$ . m, $\infty$ = -10^-3 K^-1
C) n = 10²⁸ m^-3, 11ef175a_747e_fecd_8934_9df8412bf74a_TB7453_11 = 10^-9 $\Omega$ . m, $\infty$ = +10^-3 K^-1
D) n = 10¹⁵ m^-3, 11ef175a_747e_fecd_8934_9df8412bf74a_TB7453_11 = 10³ $\Omega$ . m, $\infty$ = -10^-2 K^-1
E) n = 10²² m^-3, 11ef175a_747e_fecd_8934_9df8412bf74a_TB7453_11= 10^-7 $\Omega$ .m, $\infty$ = +10^-3 K^-1