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In an intrinsic semiconductor, at an ordinary temperature, the correct relation between the number of electrons per unit volume $n_e$ and number of holes per unit volume $n_h$ is $.....$

• A
  $n_{e =} n_{h }= 0$
• B
  $n_e< n_h$
• C
  $n_e > n_h$
• ✓
  $n_{e }= n_h$