  In this paper, we investigate the weak cosmic censorship conjecture (WCCC)
for the Reissner-Nordstrom (R-N) AdS black hole in a restricted phase space
thermodynamics (RPST). Also here, we consider energy flux and equivalence
mass-energy principle and examine the weak gravity conjecture (WGC) and the
weak cosmic censorship conjecture. The incoming and outgoing energy flux leads
to changes in the black hole. In that case, by applying the first law, we
examined whether the second law of thermodynamics is valid. And also one can
say that, in the case where absorption and superradiance are in the saturated
to an equilibrium. Also, by using the thermodynamics of black holes in the
restricted phase space, we show that if the black hole is in an extreme or
close to an extreme state with radiation and particle absorption, the weak
cosmic censorship conjecture is established. In addition, with the help of
equivalence mass and energy principle and second-order approximation, in the
near extremity, we find that when the black hole radiates and its central
charge is greater than the scaled electric charge, the superradiance particles
obey the weak gravity conjecture, and this causes the black hole to move
further away from its extreme state. But when the particles that obey the weak
gravity conjecture are attracted to the black hole when the black hole is very
small. Then, in this case, we note that the black hole becomes closer to its
extreme state.
