Regarding continuity equation, which of the following statement is/are correct.
1) It is also called law of conservation of energy.
2) Continuity equation for holes is given as
\(\frac{{\delta p}}{{\delta t}} = - \frac{{\delta F{e^ + }}}{{\delta n}} + {g_p} - \frac{p}{{{\tau _{pt}}}}\)
3) Continuity equation for electrons is given as:
\(\frac{{\delta n}}{{\delta t}} = - \frac{{\delta F{n^ - }}}{{\delta n}} + {g_n} - \frac{n}{{{\tau _{nt}}}}\)
4) It is also called law of conservation of charge1
1, 2, 3 are correct
2
2, 3, 4 are correct
3
All are correct
4
1 and 2 is correct