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Physics
Physics
Problem
Identify the correct relation that connects the current
I
I
I
in a uniform metallic conductor with electron number density
n
n
n
, electronic charge
e
e
e
, drift velocity
v
d
v_d
v
d
and cross-sectional area
A
A
A
. a)
1
2
n
e
A
v
d
\dfrac{1}{2}\,n e A v_d
2
1
n
e
A
v
d
b)
2
n
e
A
v
d
2 n e A v_d
2
n
e
A
v
d
c)
n
e
A
v
d
n e A v_d
n
e
A
v
d
d)
2
n
e
A
v
d
\sqrt{2}\,n e A v_d
2
n
e
A
v
d
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