From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 1529/CH18/EX18.12/18_12.sce | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100755 1529/CH18/EX18.12/18_12.sce

(limited to '1529/CH18/EX18.12')

diff --git a/1529/CH18/EX18.12/18_12.sce b/1529/CH18/EX18.12/18_12.sce
new file mode 100755
index 000000000..5bb5e9e22
--- /dev/null
+++ b/1529/CH18/EX18.12/18_12.sce
@@ -0,0 +1,20 @@
+//Chapter 18, Problem 12
+clc;
+//initializing the variables:
+L = 6;              //inductance in henry
+r = 10;             //resistance in ohms
+V = 120;            //supply voltage
+taw = 0.3;          //time constant
+t1 = 1;             // in secs
+
+//calculation:
+R = (L/taw) - r
+Rt = R + r
+I = V/Rt
+i2 = 0.1*I
+i1 = I*(%e^(-1*t1/taw))
+t2 = -1*taw*log((i2/I))
+
+printf("\n (a)Resistance of the coil = %.0f ohm\n\n",R)
+printf("\n (b)Current flowing in the circuit one second after the shorting link has been placed = %.3f A\n\n",i1)
+printf("\n (c)The time for the current to decay to 0.1 times of initial value = %.3f sec\n\n",t2)
-- 
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