Question

If 2×10^9 electrons are transferred from a glass rod to a piece of silk by rubbing,what will be the net charge on both objects?

Answer 1

Electron Transferred from glass to the silk $= 2 \times 10^{9}$

Charge on one electron $=-1.602\times 10^{-19} \; C$

Hence total charge transferred from Glass to silk

$=(-1.602\times 10^{-19} \; C) \times (2.0\times 10^{9}) \\ =-3.204 \times 10^{-10} \;C$

Because $-3.204 \times 10^{-10} \; C$ charge is transferred from glass to silk, hence the silk will have a net negative charge and glass will have a net positive charge values of which are given below:

Net charge on silk $=-3.204 \times 10^{-10} \; C$

Net charge on Glass $=3.204 \times 10^{-10} \; C$