An infinitely long solid cylinder of radius R has a uniform volume charge density ρ . It has a spherical cavity of radius R2 with it's centre on the axis of the cylinder, as shown in the figure. The magnitude of the electric field at the point P, which is at a distance 2R from the axis of the cylinder, is given by the expression 23ρR16kϵ0. The value of k is

An infinitely long solid cylinder of radius R has a uniform volume cha

1.	An infinitely long solid cylinder of radius R has a uniform volume charge density ρ . It has a spherical cavity of radius R2 with it's centre on the axis of the cylinder, as shown in the figure. The magnitude of the electric field at the point P, which is at a distance 2R from the axis of the cylinder, is given by the expression 23ρR16kϵ0. The value of k is
Answer» An infinitely long solid cylinder of radius $R$ has a uniform volume charge density $ρ$ . It has a spherical cavity of radius $\frac{R}{2}$ with it's centre on the axis of the cylinder, as shown in the figure. The magnitude of the electric field at the point $P$ , which is at a distance $2 R$ from the axis of the cylinder, is given by the expression $\frac{23 ρ R}{16 k ϵ_{0}}$ . The value of $k$ is

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