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A long cylindrical conductor of radius R...

A long cylindrical conductor of radius R carries I as shown. The current density is a function of radius r as j = br, where b is a constant. The magnetic field at a distance `r_(1)(r_(1)ltR)` is

A

`(mu_(0)br_(1)^(2))/(2)`

B

`(mu_(0)br_(1)^(3))/(2)`

C

`(mu_(0)br_(1)^(2))/(3)`

D

zero

Text Solution

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The correct Answer is:
C
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