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diff --git a/Fundamental_Of_Physics_by_D_Haliday/30-Magnetic_fields_due_to_Current.ipynb b/Fundamental_Of_Physics_by_D_Haliday/30-Magnetic_fields_due_to_Current.ipynb
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+{
+"cells": [
+ {
+		   "cell_type": "markdown",
+	   "metadata": {},
+	   "source": [
+       "# Chapter 30: Magnetic fields due to Current"
+	   ]
+	},
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 30.2: Sample_Problem_2.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"exec('degree_rad.sci', -1)\n",
+"\n",
+"//Given that\n",
+"i1 = 15  //in A\n",
+"i2 = 32  //in A\n",
+"d = 5.3*10^-2  //in m\n",
+"uo = 4*%pi*10^-7  //in SI unit\n",
+"\n",
+"//Sample Problem 30-2\n",
+"printf('**Sample Problem 30-2**\n')\n",
+"R = d/sqrt(2)\n",
+"B1 = uo*i1/(2*%pi*R)\n",
+"B2 = uo*i2/(2*%pi*R)\n",
+"theta = atan(B1/B2)\n",
+"B = sqrt(B1^2 + B2^2)\n",
+"printf('The magnitude of net magnetic field is %eT\n', B)\n",
+"printf('The angle made by the net magnetic field by the positive x-axis is %fdegrees', rtod(theta)+45)"
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 30.3: Sample_Problem_3.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"//Given that\n",
+"a = 2*10^-2  //in meter\n",
+"b = 4*10^-2  //in meter\n",
+"r = 3*10^-2  //in meter\n",
+"c = 3*10^6  //in A/m^4\n",
+"uo = 4*%pi*10^-7  //in SI unit \n",
+"\n",
+"//Sample Problem 30-3\n",
+"printf('**Sample Problem 30-3**\n')\n",
+"//Using gauss law\n",
+"//B*L = uo*I\n",
+"Ienc = integrate('c*x^2*2*%pi*x', 'x', a, r)\n",
+"L = 2*%pi*r\n",
+"B = uo*Ienc/L\n",
+"printf('The magnetic field at x=r is %eT', B)"
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 30.4: Sample_Problem_4.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"//Given that\n",
+"L = 1.23  //in meter\n",
+"d = 3.55*10^-2  //in meter\n",
+"i = 5.57  //in A\n",
+"n = 850*5\n",
+"uo = 4*%pi*10^-7  //in SI unit\n",
+"\n",
+"//Sample Problem 30-4\n",
+"printf('**Sample Problem 30-4**\n')\n",
+"B = uo*n/L*i\n",
+"printf('The magnetic field inside the solenoid is %eT', B)"
+   ]
+   }
+],
+"metadata": {
+		  "kernelspec": {
+		   "display_name": "Scilab",
+		   "language": "scilab",
+		   "name": "scilab"
+		  },
+		  "language_info": {
+		   "file_extension": ".sce",
+		   "help_links": [
+			{
+			 "text": "MetaKernel Magics",
+			 "url": "https://github.com/calysto/metakernel/blob/master/metakernel/magics/README.md"
+			}
+		   ],
+		   "mimetype": "text/x-octave",
+		   "name": "scilab",
+		   "version": "0.7.1"
+		  }
+		 },
+		 "nbformat": 4,
+		 "nbformat_minor": 0
+}