These are some solved examples related to electric charge and properties of electric charge given in this page.
Is there any transfer of mass when electrons are transferred from one substance to another?
Question 2 (NCERT)
A polythene piece rubbed with wool is found to have a negative charge of 3.2 × 10–7
Estimate the number of electrons transferred (from which to which?)
Is there a transfer of mass from wool to polythene?
When a glass rod is rubbed with a silk cloth, charges appear on both. A similar phenomenon is observed with many other pairs of bodies. Explain how this observation is consistent with the law of conservation of charge.
Question 4 (a)
Explain the meaning of the statement ‘electric charge of a body is quantized’.
Why can one ignore quantization of electric charge when dealing with macroscopic i.e., large scale charge?