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+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:ff31365c358b779c99b024fa56a9beb40a0947b196550247c290e3f8ef54a35f"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "2: Electrostatics-II"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example number 2.1, Page number 47"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "#importing modules\n",
+      "import math\n",
+      "from __future__ import division\n",
+      "\n",
+      "#Variable declaration\n",
+      "dV=8*10**7;      #potential on cloud(V)\n",
+      "dx=500;    #height(m)\n",
+      "\n",
+      "#Calculation\n",
+      "E=dV/dx;     #electric field intensity(V/m)\n",
+      "\n",
+      "#Result\n",
+      "print \"electric field intensity is\",E/10**4,\"*10**4 V/m\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "electric field intensity is 16.0 *10**4 V/m\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example number 2.2, Page number 47"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "#importing modules\n",
+      "import math\n",
+      "from __future__ import division\n",
+      "\n",
+      "#Variable declaration\n",
+      "dV=8000;      #potential difference(V)\n",
+      "dx=0.2;    #height(m)\n",
+      "q=5*10**-9;    #positive charge(C)\n",
+      "\n",
+      "#Calculation\n",
+      "E=dV/dx;     #electric field intensity(V/m)\n",
+      "F=q*E;    #force acting(N)\n",
+      "\n",
+      "#Result\n",
+      "print \"force acting is\",F*10**4,\"*10**-4 N\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "force acting is 2.0 *10**-4 N\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example number 2.3, Page number 47"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "#importing modules\n",
+      "import math\n",
+      "from __future__ import division\n",
+      "\n",
+      "#Variable declaration\n",
+      "e=1.6*10**-19;     #charge on proton(C)\n",
+      "z=79;    #atomic number of gold\n",
+      "#let x=1/(4*pi*epsilon0)\n",
+      "x=9*10**9;\n",
+      "r=6.6*10**-15;   #radius(m)\n",
+      "\n",
+      "#Calculation\n",
+      "q=z*e;    #charge on gold nucleus(C)\n",
+      "V=x*q/r;   #potential(V)\n",
+      "\n",
+      "#Result\n",
+      "print \"potential is\",round(V/10**6,1),\"*10**6 V\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "potential is 17.2 *10**6 V\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example number 2.4, Page number 47"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "#importing modules\n",
+      "import math\n",
+      "from __future__ import division\n",
+      "\n",
+      "#Variable declaration\n",
+      "theta1=0;    #angle on axis(radian)\n",
+      "theta2=90;   #angle on perpendicular bisector(degree)\n",
+      "r=1;   #distance(m)\n",
+      "p=4.5*10**-10;   #dipole moment(C/m)\n",
+      "#let x=1/(4*pi*epsilon0)\n",
+      "x=9*10**9;\n",
+      "\n",
+      "#Calculation\n",
+      "theta2=theta2*math.pi/180;     #angle on perpendicular bisector(radian)\n",
+      "V1=x*p*math.cos(theta1)/(r**2);    #electric potential on axis(V)\n",
+      "\n",
+      "#Result\n",
+      "print \"electric potential on axis is\",V1,\"V\"\n",
+      "print \"electric potential on perpendicular bisector is 0 V\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "electric potential on axis is 4.05 V\n",
+        "electric potential on perpendicular bisector is 0 V\n"
+       ]
+      }
+     ],
+     "prompt_number": 19
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
+\ No newline at end of file