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(B) For a cylindrical wire carrying a steady current $I$:$1$. Inside the wire,there is an electric field $E = J/\sigma$ (where $J$ is current density

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$b, c$

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(B) For a cylindrical wire carrying a steady current $I$:$1$. Inside the wire,there is an electric field $E = J/\sigma$ (where $J$ is current density and $\sigma$ is conductivity) to maintain the steady current flow. Thus,the electric field at the axis is not zero.$2$. According to Ampere's circuital law,the magnetic field $B$ at a distance $r$ from the axis (where $r $3$. Outside the wire (in the vicinity),the electric field is zero because the wire is electrically neutral. However,the magnetic field outside is given by $B = \frac{\mu_0 I}{2\pi r}$,which is not zero.Therefore,statements $(b)$ and $(c)$ are correct.

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