6 files changed, 50 insertions, 0 deletions
diff --git a/24/CH30/EX30.2/Example30_2.sce b/24/CH30/EX30.2/Example30_2.sce
new file mode 100755
index 000000000..dbbc2c155
--- /dev/null
+++ b/24/CH30/EX30.2/Example30_2.sce
@@ -0,0 +1,17 @@
+exec('degree_rad.sci', -1)
+
+//Given that
+i1 = 15  //in A
+i2 = 32  //in A
+d = 5.3*10^-2  //in m
+uo = 4*%pi*10^-7  //in SI unit
+
+//Sample Problem 30-2
+printf("**Sample Problem 30-2**\n")
+R = d/sqrt(2)
+B1 = uo*i1/(2*%pi*R)
+B2 = uo*i2/(2*%pi*R)
+theta = atan(B1/B2)
+B = sqrt(B1^2 + B2^2)
+printf("The magnitude of net magnetic field is %eT\n", B)
+printf("The angle made by the net magnetic field by the positive x-axis is %fdegrees", rtod(theta)+45)
+\ No newline at end of file
diff --git a/24/CH30/EX30.2/Example30_2_result.txt b/24/CH30/EX30.2/Example30_2_result.txt
new file mode 100755
index 000000000..44e529aba
--- /dev/null
+++ b/24/CH30/EX30.2/Example30_2_result.txt
@@ -0,0 +1,3 @@
+**Sample Problem 30-2**
+The magnitude of net magnetic field is 1.886038e-004T
+The angle made by the net magnetic field by the positive x-axis is 70.114835degrees 
+\ No newline at end of file
diff --git a/24/CH30/EX30.3/Example30_3.sce b/24/CH30/EX30.3/Example30_3.sce
new file mode 100755
index 000000000..7d13dc4ba
--- /dev/null
+++ b/24/CH30/EX30.3/Example30_3.sce
@@ -0,0 +1,15 @@
+//Given that
+a = 2*10^-2  //in meter
+b = 4*10^-2  //in meter
+r = 3*10^-2  //in meter
+c = 3*10^6  //in A/m^4
+uo = 4*%pi*10^-7  //in SI unit 
+
+//Sample Problem 30-3
+printf("**Sample Problem 30-3**\n")
+//Using gauss law
+//B*L = uo*I
+Ienc = integrate('c*x^2*2*%pi*x', 'x', a, r)
+L = 2*%pi*r
+B = uo*Ienc/L
+printf("The magnetic field at x=r is %eT", B)
+\ No newline at end of file
diff --git a/24/CH30/EX30.3/Example30_3_result.txt b/24/CH30/EX30.3/Example30_3_result.txt
new file mode 100755
index 000000000..d3d4928ce
--- /dev/null
+++ b/24/CH30/EX30.3/Example30_3_result.txt
@@ -0,0 +1,2 @@
+**Sample Problem 30-3**
+The magnetic field at x=r is 2.042035e-005T 
+\ No newline at end of file
diff --git a/24/CH30/EX30.4/Example30_4.sce b/24/CH30/EX30.4/Example30_4.sce
new file mode 100755
index 000000000..9bae95a97
--- /dev/null
+++ b/24/CH30/EX30.4/Example30_4.sce
@@ -0,0 +1,11 @@
+//Given that
+L = 1.23  //in meter
+d = 3.55*10^-2  //in meter
+i = 5.57  //in A
+n = 850*5
+uo = 4*%pi*10^-7  //in SI unit
+
+//Sample Problem 30-4
+printf("**Sample Problem 30-4**\n")
+B = uo*n/L*i
+printf("The magnetic field inside the solenoid is %eT", B)
+\ No newline at end of file
diff --git a/24/CH30/EX30.4/Example30_4_result.txt b/24/CH30/EX30.4/Example30_4_result.txt
new file mode 100755
index 000000000..cdb58abc6
--- /dev/null
+++ b/24/CH30/EX30.4/Example30_4_result.txt
@@ -0,0 +1,2 @@
+**Sample Problem 30-4**
+The magnetic field inside the solenoid is 2.418516e-002T 
+\ No newline at end of file