Current density in a wire varies with r (distance from the centre) according to the relation, J=kr2. Here, k is a constant. What will be the magnitude of magnetic field at a distance R (R<a) from the centre?[a is the radius of the wire]

Current density in a wire varies with r (distance from the centre) acc

1.	Current density in a wire varies with r (distance from the centre) according to the relation, J=kr2. Here, k is a constant. What will be the magnitude of magnetic field at a distance R (R<a) from the centre?[a is the radius of the wire]
Answer» Current density in a wire varies with $r$ $($ distance from the centre $)$ according to the relation, $J = k r^{2}$ . Here, $k$ is a constant. What will be the magnitude of magnetic field at a distance $R (R < a)$ from the centre? $[a$ is the radius of the wire $]$

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Current density in a wire varies with r (distance from the centre) according to the relation, J=kr2. Here, k is a constant. What will be the magnitude of magnetic field at a distance R (R&lt;a) from the centre?[a is the radius of the wire]

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Current density in a wire varies with r (distance from the centre) according to the relation, J=kr2. Here, k is a constant. What will be the magnitude of magnetic field at a distance R (R<a) from the centre?[a is the radius of the wire]