(a) Plot the value of the radial component of the electric field due to a positively charged pellet as a function of distance from the pellet center.

(b) Repeat for a negatively charged pellet. Take each pellet to be a uniformly charged nonconducting sphere having a radius of \(18.5 \mathrm{~mm}\) and carrying a charge of \(1.11 \mathrm{nC}\).