In Milikan's experiment, static electric charge on the oil drops has been obtained by shining X-rays

cbse
structureofatom

#1

In Milikan’s experiment, static electric charge on the oil drops has been obtained by shining X-rays. If the static electric charge on the oil drops is - 1.282 x ${{10}^{-18}}$ C, calculate the number of electrons present on it.


#2