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+//Book Name:Fundamentals of Electrical Engineering
+//Author:Rajendra Prasad
+//Publisher: PHI Learning Private Limited
+//Edition:Third ,2014
+
+//Ex1_5.sce.
+
+clc;
+clear;
+subplot(2,2,1)
+t=[0:0.00001:2];
+x=length(t);
+i=ones(1,x);
+for n=1:x;
+if t(n)<=1 
+    i(n)=2
+else
+    i(n)=0
+end
+end
+xlabel("Time in seconds")
+ylabel("Current in amphere")
+title("current wavefrom")
+plot(t,i)
+subplot(2,2,2)
+t=[0:0.00001:2];
+x=length(t);
+v=ones(1,x);
+c=0.1;
+for n=1:x;
+    i(n)=2;
+if t(n)<=1 
+    v(n)=i(n)*t(n)/c;
+else
+    v(n)=i(n)/c;
+end
+end
+xlabel("Time in seconds")
+ylabel("voltaget in volts")
+title("voltage wavefrom")
+plot(t,v)
+subplot(2,3,4)
+t=[0:0.00001:2];
+x=length(t);
+q=ones(1,x);
+c=0.1;
+for n=1:x;
+    v(n)=20;
+if t(n)<=1 
+    q(n)=v(n)*t(n)*c;
+else
+    q(n)=v(n)*c;
+end
+end
+xlabel("Time in seconds")
+ylabel("capacitance  in coloumbs")
+title("charge waveform")
+plot(t,q)
+subplot(2,3,5)
+t=[0:0.00001:2];
+x=length(t);
+p=ones(1,x);
+for n=1:x;
+    v(n)=20;
+if t(n)<=1 
+    i(n)=2;
+    p(n)=v(n)*t(n)*i(n);
+else
+    i(n)=0;
+    p(n)=v(n)*i(n);
+end
+end
+xlabel("Time in seconds")
+ylabel("power in watts")
+title("power waveform")
+plot(t,p)
+subplot(2,3,6)
+t=[0:0.00001:2];
+x=length(t);
+e=ones(1,x);
+c=0.1;
+for n=1:x;
+    v(n)=20;
+if t(n)<=1 
+  e(n)=((v(n)*t(n))^2*c)/2;
+else
+    e(n)=((v(n)^2)*c)/2;
+end
+end
+xlabel("Time in seconds")
+ylabel("Energy in joules")
+title("Energy waveform")
+plot(t,e)
+
+
+