If the mass of a body increases by 9.1 ng due to charging, calculate the number of electrons provided to the body.

Find the number of electrons present in 1 coulomb charge?

Calculate the total charge in a mole of electron.

The number of electrons having total mass of 1kg is

Resistance of body against diseases is due to-

If the momentum of a body increases by 20% , the percentage increases in K.E. will be

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?

Calculate the number of lines of force originating from a charge of 1C.