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//To Find the Energy due to an Electromagnetic Wave
//Example 40.3
clear;
clc;
E0=50;//Maximum Electric Field in N/C
x=50*10^-2;//Length of Cylinder in metres
A=10*10^-4;//Cross-Sectional Area of Cylinder in m^2
e0=8.85*10^-12;//Permittivity of free space
Uav=0.5*e0*E0^2;//Average Energy Density
V=A*x;//Volume of Cylinder
U=Uav*V;//Energy contained in the Volume of Cylinder
printf("Energy contained in the volume of the cylinder = %.1f*10^-12 J",U*10^12);
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