Current Through Outer Wire Portion (Jee Mains) | ExamDuo
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Electric Current and Drift
Medium
Current Through Outer Wire Portion
The current density in a cylindrical wire of radius
4
mm
is
4
×
10
6
Am
−
2
. The current through the outer portion of the wire between radial distances
R
2
and
R
is____
π
A
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