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//Example number 7.5, Page number 147
clc;clear;
close;
//Variable declaration
A=650*10**-4; //area(m**2)
epsilon0=8.85*10**-12;
d=4*10**-2; //seperation(m)
Q=2*10**-10; //charge(C)
epsilonr=3.5; //dielectric constant
//Calculation
C=A*epsilon0/d;
V=Q/C; //voltage(V)
//Result
printf("voltage is %.1f V",V)
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