Calculate the charge carried by `12.5xx10^(8)` electrons.

Calculate the total charge of a mole of electrons if the electrical charge on a single electron is 1.60 xx 10^(-19) C.

There is a copper wire of radius 1mm and it carries a current of 2 ampere, calculate the drift speed of electrons assuming there are 8.5 xx10^(28) free electrons per metre cube.

In an oil drop experiment, the charges on oil drops were found as 1.5 xx 10^(-15), 3 xx 10^(-15), 4.5 xx 10^(-15), 6.0 xx 10^(-15) . Calculate the magnitude of the charge on the electron.

The charge equivalent to 6 times 10^18 electrons is

A metal sphere has a charge of -6 muC . When 5xx10^(12) electrons are removed from the sphere. What would be net charge on it ?

A metal sphere has a charge of -6 muC . When 5 xx 10 ^(12) electrons are removed from the sphere, what would be net charge on it?