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 long cylidrical conductor of radius R carries a current i as shown in figure. The current desity J is a function of radius according to J=br , where b is a constant. Find an expression for the magnetic field B a. at a distasnce r_1ltR and b.at a distance r_2gtR, measured from the axis.

A long cylindrical conductor of radius R carries a current i as shown in the figure. The current density J varies across the cross-section as J = kr^(2) , where, k is a constant. Find an expression for the magnetic field B at a distance r (lt R) from the axis

Consider an infinite long cylinderical conductor of radius R carrying a current I with a non uniform current density J=alphar where a is a constant. Find the magnetic field for inside and outside prints.

A non-homogeneous cylinder of radius "R" carries a current I whose current density varies with the radial "distance "r" from the centre of the rod as J=sigma r where sigma is a constant.The magnetic field at a point "P" at a distance r

The magnetic field at a distance r from a long wire carryimg current I is 0.4 T. The magnetic field at a distance 2r is

A long straight wire of radius R carries a steady current which is uniformly distributed through the cross-section of the wire. The magnitudes of the magnetic field at distance r_(1) and r_(2) from the centre of the wire are B_(1) and B_(2) respectively. Then

An infinitely long cylinderical wire of radius R is carrying a current with current density j=alphar^(3) (where alpha is constant and r is the distance from the axis of the wire). If the magnetic fixed at r=(R)/(2) is B_(1) and at r=2R is B_(2) then the ratio (B_(2))/(B_(1)) is