clc
// Given That
A = 200 // magnitude of electric field in V/m^2
epsilon_0 = 8.85e-12 // permittivity of free space
a = 20 // radius of sphere in cm
//Sample Problem 10Page No. 84
printf("\n # Problem 10 # \n ")
q = 4*%pi * epsilon_0*A*(a*1e-2)^3  //calculation of Charge contained in sphere
 printf("Charge contained in sphere is  %e C. \n", q)