QUESTION
A point charged particle of 8 μC is held at the center of an insulating spherical shell of inner radius 6 cm and outer radius 9 cm. The shell has a uniform charge density of ρ=2×10−2 C/m3. A) What is the magnitude of the electric field at radial distance r=2cm? Express your answer numerically, to two significant figures, using ϵ0=8.85×10−12C2/(N⋅m2) B)Find the magnitude of the electric field at radial distance r=7? Express your answer numerically, to two significant figures, using ϵ0=8.85×10−12C2/(N⋅m2) C)Find the magnitude of the electric field at radial distance r=12? Express your answer numerically, to two significant figures, using ϵ0=8.85×10−12C2/(N⋅m2)