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+//Book Name:Fundamentals of Electrical Engineering
+//Author:Rajendra Prasad
+//Publisher: PHI Learning Private Limited
+//Edition:Third ,2014
+
+//Ex4_11.sce.
+
+clc;
+clear;
+q=1e-6;
+l=2e-2;
+E=1e5;
+
+printf("\n (a)")
+theta=90;
+p=l*q;
+T_max=p*E*sind(theta);
+printf("\n   The maximum torque=%1.1f*10^-3 Nm\n",T_max*1e3)
+
+printf("\n (b)")
+U_180=-p*E*cosd(180);                         //U is the potential energy for theta=180 degree and 0 degree
+U_0=-p*E*cosd(0);
+W=(U_180)-(U_0);
+printf("\n   The work done=%1.1f*10^-3 J",W*1e3)
+