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Physics
Physics
Problem
The charge
q
q
q
flowing through a copper wire of cross-sectional area
A
=
1
mm
2
A = 1\,\text{mm}^{2}
A
=
1
mm
2
varies linearly with time as
q
(
t
)
=
8
t
q(t) = 8t
q
(
t
)
=
8
t
. If the free electron density of copper is
n
=
8
×
10
28
m
−
3
n = 8 \times 10^{28}\,\text{m}^{-3}
n
=
8
×
1
0
28
m
−
3
, calculate the drift velocity of the electrons. (Charge of electron
e
=
1.6
×
10
−
19
C
e = 1.6 \times 10^{-19}\,\text{C}
e
=
1.6
×
1
0
−
19
C
)
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