Physics · JEE | Semiconductor Electronics: Materials, Devices and Simple Circuits

In an intrinsic semiconductor, if \( n_e \) is the number density of conduction electrons and \( n_h \) is the number density of holes, which of the following relations holds true at thermal equilibrium?

1. A
   \( n_e \cdot n_h = n_i \)
2. B
   \( n_e = n_h = n_i \)
3. C
   \( n_e + n_h = n_i^2 \)
4. D
   \( n_e = n_h = n_i^2 \)