Two cylindrical rods of uniform cross-section area A and 2 A, having free electrons per unit volume 2n and n, respectively, are joined in series. A current I flows through them in steady state. The ratio of drift velocity of free electron in left rod to drift velocity of electron in the right rod, 
, is
A
B
1
C
2
D
4
Text Solution
Verified by ExpertsThe correct answer is:
B
Since current 
through the both the rods is same
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