The rate of recombination or generation of charge carriers in a semiconductor is governed by the law$(s)$ of:

When the conductivity of a semiconductor is only due to the breaking of covalent bonds,the semiconductor is called:

The net charge on an $N-$type semiconductor is

Pure silicon at $300 \ K$ has equal electron and hole concentration of $1.5 \times 10^{16} \ m^{-3}$. If the hole concentration increases to $3 \times 10^{22} \ m^{-3}$,then the electron concentration in the silicon is

$P-$type semiconductor is formed when:

Suppose a pure $Si$ crystal has $5 \times 10^{28}$ atoms $m^{-3}$. It is doped with $1 \text{ ppm}$ concentration of pentavalent $As$. Calculate the number of electrons and holes. $(n_i = 1.5 \times 10^{16} \text{ m}^{-3})$