Figure shows the cross-sectional view of the hollow cylindrical conductor with inner radius ' R '...

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Figure shows the cross-sectional view of the hollow cylindrical conductor with inner radius ' R ' and outer radius ' 2 R '. Cylinder is carrying uniformly distributed current along it's axis. The magnetic induction at point '' at a distance 3 R/2 from the axis of the cylinder will be
(a) Zero
(b) 5 μ_0 i/72 π R
(c) 7 μ_0 i/18 π R
(d) 5 μ_0 i/36 π R

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sir u did wrong calcultion at 2:50 sec instead u have to substract area of 3/2piR2 from piR2 than u will get same ans 5\4piR2 but it will be correct explanation.

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