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diff --git a/sample_notebooks/SandhyaArroju/Chapter7.ipynb b/sample_notebooks/SandhyaArroju/Chapter7.ipynb new file mode 100644 index 00000000..73c69a71 --- /dev/null +++ b/sample_notebooks/SandhyaArroju/Chapter7.ipynb @@ -0,0 +1,444 @@ +{ + "cells": [ + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "# 7: Magnetic Properties" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example number 1, Page number 7-22" + ] + }, + { + "cell_type": "code", + "execution_count": 3, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "magnetic flux density is 0.628 wb/m**2\n", + "magnetic moment is -2.0 A/m\n" + ] + } + ], + "source": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "chi=-0.4*10**-5; #magnetic susceptibility\n", + "H=5*10**5; #magnetic field intensity(amp/m)\n", + "mew0=4*math.pi*10**-7;\n", + "\n", + "#Calculation\n", + "B=mew0*H*(1+chi); #magnetic flux density(wb/m**2)\n", + "M=chi*H; #magnetic moment(A/m)\n", + "\n", + "#Result\n", + "print \"magnetic flux density is\",round(B,3),\"wb/m**2\"\n", + "print \"magnetic moment is\",M,\"A/m\"" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example number 2, Page number 7-22" + ] + }, + { + "cell_type": "code", + "execution_count": 10, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "magnetisation is -0.25 *10**-2 A/m\n", + "magnetic flux density is 1.257 *10**-3 wb/m**2\n" + ] + } + ], + "source": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "chi=-0.25*10**-5; #magnetic susceptibility\n", + "H=1000; #magnetic field intensity(amp/m)\n", + "mew0=4*math.pi*10**-7;\n", + "\n", + "#Calculation\n", + "M=chi*H; #magnetisation(A/m)\n", + "B=mew0*(H+M); #magnetic flux density(wb/m**2)\n", + "\n", + "#Result\n", + "print \"magnetisation is\",M*10**2,\"*10**-2 A/m\"\n", + "print \"magnetic flux density is\",round(B*10**3,3),\"*10**-3 wb/m**2\"" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example number 3, Page number 7-23" + ] + }, + { + "cell_type": "code", + "execution_count": 12, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "magnetisation is 3500 A/m\n", + "magnetic flux density is 4.71 *10**-3 wb/m**2\n" + ] + } + ], + "source": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "mewr=15; #relative permeability\n", + "H=250; #magnetic field intensity(amp/m)\n", + "mew0=4*math.pi*10**-7;\n", + "\n", + "#Calculation\n", + "M=H*(mewr-1); #magnetisation(A/m)\n", + "B=mew0*(H+M); #magnetic flux density(wb/m**2)\n", + "\n", + "#Result\n", + "print \"magnetisation is\",M,\"A/m\"\n", + "print \"magnetic flux density is\",round(B*10**3,2),\"*10**-3 wb/m**2\"" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example number 4, Page number 7-23" + ] + }, + { + "cell_type": "code", + "execution_count": 15, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "magnetisation is -0.42 A/m\n", + "magnetic flux density is 1.2561 *10**-3 wb/m**2\n", + "answer for flux density in the book varies due to rounding off errors\n" + ] + } + ], + "source": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "chi=-0.42*10**-3; #magnetic susceptibility\n", + "H=1000; #magnetic field intensity(amp/m)\n", + "mew0=4*math.pi*10**-7;\n", + "\n", + "#Calculation\n", + "M=chi*H; #magnetisation(A/m)\n", + "B=mew0*(H+M); #magnetic flux density(wb/m**2)\n", + "\n", + "#Result\n", + "print \"magnetisation is\",M,\"A/m\"\n", + "print \"magnetic flux density is\",round(B*10**3,4),\"*10**-3 wb/m**2\"\n", + "print \"answer for flux density in the book varies due to rounding off errors\"" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example number 5, Page number 7-23" + ] + }, + { + "cell_type": "code", + "execution_count": 17, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "magnetic moment is 3.93 *10**-3 A-m**2\n" + ] + } + ], + "source": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "d=0.1; #diameter(m)\n", + "i=0.5; #current(ampere)\n", + "\n", + "#Calculation\n", + "r=d/2; #radius of atom(m)\n", + "mew=i*math.pi*r**2; #magnetic moment(A-m**2)\n", + "\n", + "#Result\n", + "print \"magnetic moment is\",round(mew*10**3,2),\"*10**-3 A-m**2\"" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example number 6, Page number 7-23" + ] + }, + { + "cell_type": "code", + "execution_count": 25, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "magnetising force is 201.4 A/m\n", + "relative permeability is 17.38\n", + "answers given in the book are wrong\n" + ] + } + ], + "source": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "mew0=4*math.pi*10**-7;\n", + "B=0.0044; #magnetic flux density(wb/m**2)\n", + "M=3300; #magnetisation(A/m)\n", + "\n", + "#Calculation\n", + "H=(B/mew0)-M; #magnetising force(amp/m)\n", + "mewr=1+(M/H); #relative permeability\n", + "\n", + "#Result\n", + "print \"magnetising force is\",round(H,1),\"A/m\"\n", + "print \"relative permeability is\",round(mewr,2)\n", + "print \"answers given in the book are wrong\"" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example number 7, Page number 7-24" + ] + }, + { + "cell_type": "code", + "execution_count": 28, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "change in magnetic moment is 5.705 *10**-29 A-m**2\n", + "answer given in the book is wrong\n" + ] + } + ], + "source": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "r=0.52*10**-10; #radius(m)\n", + "B=3; #magnetic induction(web/m**2)\n", + "e=1.6*10**-19; #charge(c)\n", + "m=9.1*10**-31; #mass(kg)\n", + "\n", + "#Calculation\n", + "d_mew=e**2*r**2*B/(4*m); #change in magnetic moment(Am**2)\n", + "\n", + "#Result\n", + "print \"change in magnetic moment is\",round(d_mew*10**29,3),\"*10**-29 A-m**2\"\n", + "print \"answer given in the book is wrong\"" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example number 8, Page number 7-24" + ] + }, + { + "cell_type": "code", + "execution_count": 30, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "change in magnetic moment is 3.936 *10**-29 A-m**2\n" + ] + } + ], + "source": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "r=5.29*10**-11; #radius(m)\n", + "B=2; #magnetic induction(web/m**2)\n", + "e=1.6*10**-19; #charge(c)\n", + "m=9.1*10**-31; #mass(kg)\n", + "\n", + "#Calculation\n", + "d_mew=e**2*r**2*B/(4*m); #change in magnetic moment(Am**2)\n", + "\n", + "#Result\n", + "print \"change in magnetic moment is\",round(d_mew*10**29,3),\"*10**-29 A-m**2\"" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example number 9, Page number 7-24" + ] + }, + { + "cell_type": "code", + "execution_count": 32, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "ssusceptibility at 300K is 3.267 *10**-4\n" + ] + } + ], + "source": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "chi1=2.8*10**-4; #susceptibility\n", + "T1=350; #temperature(K)\n", + "T2=300; #temperature(K)\n", + "\n", + "#Calculation\n", + "chi2=(chi1*T1)/T2; #susceptibility at 300K\n", + "\n", + "#Result\n", + "print \"susceptibility at 300K is\",round(chi2*10**4,3),\"*10**-4\"" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example number 10, Page number 7-25" + ] + }, + { + "cell_type": "code", + "execution_count": 34, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "relative permeability of iron is 2153.85\n" + ] + } + ], + "source": [ + "#importing modules\n", + "import math\n", + "from __future__ import division\n", + "\n", + "#Variable declaration\n", + "B0=6.5*10**-4; #magnetic field(Tesla)\n", + "B=1.4; #magnetic field(Tesla)\n", + "\n", + "#Calculation\n", + "mewr=B/B0; #relative permeability of iron\n", + "\n", + "#Result\n", + "print \"relative permeability of iron is\",round(mewr,2)" + ] + } + ], + "metadata": { + "kernelspec": { + "display_name": "Python 2", + "language": "python", + "name": "python2" + }, + "language_info": { + "codemirror_mode": { + "name": "ipython", + "version": 2 + }, + "file_extension": ".py", + "mimetype": "text/x-python", + "name": "python", + "nbconvert_exporter": "python", + "pygments_lexer": "ipython2", + "version": "2.7.11" + } + }, + "nbformat": 4, + "nbformat_minor": 0 +} |