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Physics
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Q)
Charge passing through a conductor of cross -section area
A
=
0.3
m
2
is given by
q
=
3
t
2
+
5
t
+
2
in coulombs, where 't't is in seconds. What is the value of drift velocity at
t
=
2
sec. Given
n
=
2
×
10
25
/
m
n
3
:
(
1
)
0.77
×
10
−
5
m
/
s
e
c
(
2
)
1.77
×
10
−
5
m
/
s
e
c
(
3
)
2.08
×
10
−
5
m
/
s
e
c
.
(
4
)
0.57
×
10
−
5
m
/
s
e
c
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