Consider a single crystal of an intrinsic semiconductor.

Consider a single crystal of an intrinsic semiconductor. The number of free carriers at the Fermi level at room temperature is:

1. half the total number of electrons in the crystal
2. half the number of free electrons in the crystal
3. half the number of atoms in the crystal
4. zero

The number of free carriers at the Fermi level at room temperature is half the number of free electrons in the crystal.