A polythene piece rubbed with wool is found to have a negative charge of 3.2 * 10-7 C.
(i) Estimate the no. of electrons transferred
(ii) Is there a transfer of mass from wool to polythene ? If yes, then calculate the mass transferred.
use q=ne
n=number of electrons
e=charge on electron=1.2*10-19
u will get n=2*1012
yes there is a transfer of charge mass transferred = mass of 1 electron*no of electrons transferred
=9.11*10-31*2*1012