A polythene piece rubbed with wool is found to have a negative charge of `1muC`. Estimate the number of electrons transferred. Is there any transfer of mass from wool to polythene?

Explanation

Yes, there is a transfer of mass from wool to polythene piece ,
As, mass of each electron,
` m_e = 9 xx 10 ^(31) kg`
Mass transferred from wool to polythene , ` m = n xx m_e`
` " " = 1.875 xx 10 ^(12) xx 9 xx 10 ^(-31) kg`
` " " = 1.687 xx 10 ^(-18) kg `