An infinitely long wire of uniform cross section carries a current whose current density varies as j=brα where b=107πunit, - Physics - Magnetism And Matter

Question

An infinitely long wire of uniform cross section carries a current
whose current density varies as j = b r α   where  
b = 10 7 π unit ,   α = 1 unit and r the distance
from axis The magnetic induction at a distance 0 25 from axis is
given by n × 5 3 x 10 - 2 tesla Find n

Sanjay Singh · Accepted Answer

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An infinitely long wire of uniform cross section carries a current whose current density varies as j = b r α . where b = 10 7 π unit , α = . 1 unit and r the distance from axis. The magnetic induction at a distance 0.25 from axis is given by n × 5 3 x 10 - 2 tesla. Find n