In Millikan oil drop experiment, is terminal velocity same for all the drops?

I am doing the experiment and i got different velocities for the drop, should i calculate for the average velocity?

I need it to calculate for the charge.

Question

In Millikan oil drop experiment, is terminal velocity same for all the drops?

 

I am doing the experiment and i got different velocities for the drop, should i calculate for the average velocity?

 

I need it to calculate for the charge.

anonymous · Answer

In theory the velocity should be the same for all drops if all of the drops have the same radius; however, experimental results always have some measurement error and thus some uncertainty.  That means there will be some variance in your data.

anonymous · Answer

alright, thank you very much :)