  We show that spinless and neutral black holes in thermal equilibrium with
radiation undergo fluctuations of charge and angular momentum. The
corresponding spreads for a black hole in contact with charged scalar particles
is calculated. The angular momentum spread turns out to grow with the size of
the cavity. Charge spread does not depend either on the size of the cavity nor
on the elementary charge of the field. Then, either the scale of the elementary
chage is fixed by black hole physics $\alpha \sim 1/4\pi$ or the underlying
physics of these fluctuations is not the random absorption and emission of
charged particles from the bath, it remains unknown and must be clarified.
