CBSE Class 12-science Answered
Using the given formula , take the ratio of drift velocities for two wires
v = e V T / ml ; v = drift velocity , V = pot. difference , t = av. relaxation time , m = electronic mass , l = length
then substitute V = ml i / nae2T
In case of series , current will be same , hance factor, 'i' will get cancelled.
in case of parallel , replace 'i' accordingly , using ohm's law.
This video explains the concept of electric current.
This video explain the drift speed and its dependence on the externally app...
Compare the resistivity of conductors, insulators and semiconductors. Study...
Define emf, potential difference & internal resistance. Identify factors on...
This video describes about the working of cells in series combination.