Question

Total uniform charge on a sphere of radius 2 cm is 10uc. The max electric field due to sphere is

Answer 1

Using Gauss law

E. ds = \(\frac{q}{\varepsilon_0}\)

E = \(\frac{q}{\varepsilon_0.ds}\)

E = \(\frac{10\times10^{-6}}{8.85\times10^{-12}\times4\pi R^2}\) 

E = \(\frac{10\times10^{-6}}{8.85\times10^{-12}\times4\times3.14(0.02)^2}\) 

E = 227.6 x 10⁶ N/C

E = 227 MN/C