diff options
Diffstat (limited to '1529/CH18/EX18.5')
| -rwxr-xr-x | 1529/CH18/EX18.5/18_05.sce | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/1529/CH18/EX18.5/18_05.sce b/1529/CH18/EX18.5/18_05.sce new file mode 100755 index 000000000..15a36ac32 --- /dev/null +++ b/1529/CH18/EX18.5/18_05.sce @@ -0,0 +1,28 @@ +//Chapter 18, Problem 5
+clc;
+//Initializing the variables
+C=10*10^-6; //capacitance in farad
+R=25*10^3; //resistance in ohm
+V=100; //voltage dc supply
+t1=0.5; //time in seconds
+t2=0.1; //time in seconds
+vc1=45; //capacitor voltage
+Vm=V;
+
+//Calculation
+taw=C*R; //time constant
+Im=V/R; //maximum current
+vc=Vm*(1-exp(-t1/taw)); //voltage across the capacitor
+i=Im*exp(-taw/taw); //current flowing after one time constant
+vr=V*exp(-t2/taw); //voltage across the resistor
+t3=-(log(1-(vc1/Vm))/log(exp(1)))*taw; //time in seconds
+vt=V/taw; //initial rate of voltage rise
+
+
+printf("\n(a) Time constant = %f sec\n",taw);
+printf("\n(b) Maximum current = %f mA\n",Im*10^3);
+printf("\n(c) Voltage across the capacitor after 0.5 s = %f V\n",vc);
+printf("\n(d) Current flowing after one time constant = %f mA\n",i*10^3);
+printf("\n(e) Voltage across the resistor after 0.1 s = %f V\n",vr);
+printf("\n(f) Time for the capacitor voltage to reach 45V = %f s\n",t3);
+printf("\n(g) Initial rate of voltage rise = %f V\n",vt);
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