estimate the number of free electrons in a copper wire of length 1m and diameter 1mm?
Answers
Answered by
0
Explanation:
Correct option is
B
0.1 mm/s
Electron density n=
M
N
A
ρ
=
63×10
−3
(6.023×10
23
)×(9×10
3
)
=0.86×10
29
m
−3
Drift velocity v
d
=
neA
I
=
(0.86×10
29
)×(1.6×10
−19
)×π(0.5×10
−3
)
2
1.1
=0.1×10
−3
m/s=0.1 mm/s
Answered by
2
Answer:Correct option isB0.1 mm/sElectron density n= MN A ρ = 63×10 −3 (6.023×10 23 )×(9×10 3 ) =0.86×10 29 m −3 Drift velocity v d = neAI = (0.86×10 29 )×(1.6×10 −19 )×π(0.5×10 −3 ) 2 1.1 =0.1×10 −3 m/s=0.1 mm/s.
l hope it will help u
Similar questions