AIIMS 2012 Physics Question Paper for free online practice with solutions

Question : 40 of 60

Marks: +1, -0

Charge passing through a conductor of cross-section area A=0.3m2 is given by q=3t2+5t+2 in coulomb, where t is in second. What is the value of drift velocity at r = 2 s? (Given, n=2×1025∕m3)