In a Millikan's oil drop experiment, an oil drop of mass `4.9xx10^(-14)kg` is balanced by a potential difference of `4000 V` between two plates which are `8 mm` apart. Find the number of elementary charges on the drop.

In Millikan's experiment an oil drop of mass 4.9xx10^(-14) kg is balanced by applying potential difference of 2kV between the two plates which are 2 mm apart. The charge of the drop is _______.

In Millikan's oil drop experiment, an oil drop mass 60 xx 10^(-6) kg is balanced by an electric field of 10^(6) V//m . The charge in coulomb on the drop, assuming g = 10 m//s^(2) is

In Millikan's oil drop experiment an oil drop carrying a charge Q is held stationary by a potential difference 2400 V between the plates. To keep a drop of half the radius stationary the potential difference had to be made 600 V . What is the charge on the second drop ?

In Millikan's oil drop experiment, a charged oil drop of mass 3.2xx10^(-14)kg is held stationary between two parallel plates 6mm apart by applying a potential difference of 1200 V between them. How many excess electrons does the oil drop carry? Take g =10ms^(-2)

In Millike's oil drop experiment an oil drop carrying a charge Q is held stationary by a potential difference 2400 V between the plates. To keep a drop of half the radius stationary the potential difference had to be made 600 V . What is the charge on the second drop ?

In Milikan's experiment , an oil drop having charge q, mass m , gets accelerated by applying a potential difference V in between two plates separated by a distance 'd' . The acceleration is