A straight conductor of uniform cross-section carries a current I. If s is the specific charge of an electron, the momentum of all the free electrons per unit length of the conductor, due to their drift velocity only is -
A
Is
B
C
I/s
D
(I/s) 2
Text Solution
Verified by ExpertsThe correct answer is:
C
Avne. No. of free electrons per unit length 
.
Momentum of each free electron 
.
momentum per unit length 
.
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