An ail drop having charge `2e` is kept stationary between two parallel horizontal plates `2.0 cm` apart when a potential difference of `12000` volts is applied between them. If the density of oil is `900 kg//m^(3)`, the radius of the drop will be

Two plates are 2cm apart, a potential difference of 10 volt is applied between them, the electric field between the plates is

Two plates are 2cm apart, a potential difference of 10 volt is applied between them, the electric field between the plates is

Two plates are 2 cm apart. If a potential difference of 10 V is applied between them. The electric field between the plates will be

Two plates are 1.5 cm apart, and a potential difference of 7.5 volt is applied between them, the electric field between the plates is

In the Millikan's experiment, the distance between two horizontal plates is 2.5 cm and the potential difference applied is 250 V .The electric field between the plates will be

An oil drop of mass 5xx10^(-15) kg carries a charge Q. The drop is stationary between two parallel metal plates 25 mm apart with a p.d. of 1000 V between them. Determine Q. Take g=10 ms^(-2) .

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)

An oil drop of 10^(-6) m radius carring a charge 4 times that of an election and remain suspended between two charged parellel plate .01m apart. Find the potential difference between the plates.

Plates of a parallel plate capacitor, having a potential difference 100 V applied across them, carry a surface charge density of "50 nC cm"^(-2) . Spacing between the plates is