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// chapter 2 example 8
//------------------------------------------------------------------------------
clc;
clear;
// | ax ay az |
// v*E = | ∂/∂x ∂/∂y ∂/∂z |
// | 0 0 80*cos(6.277*10^8t - 2.092y) |
// Electric flux density D = εoE
// = 8.85*10^-12 *80cos(6.277*10^8t - 2.092y)ax
// = 708*10^-12 *cos(6.277*10^8 t -2.092y)ax
// Displacement current density = ∂D/∂t
// ∂D/∂t = -708*10^-12*6.277*10^8*sin(6.277*10^8t - 2.092y)ax
// = -0.444sin(6.277*10^8t - 2.092y)ax
mprintf('Amplitude of displacement current density = 0.0444 A/m^2');
//------------------------------------------------------------------------------
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