The energy stored in the electric field produced by a metal sphere is 4.5 J. If the sphere contains 4 μ C charge, its radius will be: [. Take:.1/(4 π…

The energy stored in the electric field produced by a metal sphere is $\displaystyle 4.5$ J. If the sphere contains $\displaystyle 4 \mu \mathrm{C}$ charge, its radius will be : $\displaystyle \left[\right.$ Take : $\displaystyle \left.\frac{1}{4 \pi \epsilon_{\mathrm{o}}}=9 \times 10^9 \mathrm{~N}-\mathrm{m}^2 / \mathrm{C}^2\right]$