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diff --git a/Engineering_Physics_by_K_Rajagopal/14-Dielectrics.ipynb b/Engineering_Physics_by_K_Rajagopal/14-Dielectrics.ipynb new file mode 100644 index 0000000..6a0ee35 --- /dev/null +++ b/Engineering_Physics_by_K_Rajagopal/14-Dielectrics.ipynb @@ -0,0 +1,201 @@ +{ +"cells": [ + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "# Chapter 14: Dielectrics" + ] + }, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 14.1: example_1.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"clc;\n", +"clear all;\n", +"er=1.0000684;//dielectric constant of helium \n", +"N=2.7*1e25;//atoms/m^3\n", +"r=(er-1)/(4*%pi*N);\n", +"R=r^(1/3); //radius of electron cloud\n", +"disp('m',R,'radius of electron cloud is');\n", +"//slight variation in ans than book.. checked in calculator also" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 14.2: example_2.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"clc;\n", +"clear all;\n", +"k=1.38*1e-23;//boltzmann constant\n", +"N=1e27;//HCL molecule per cubic meter\n", +"E=1e6;//electric field of vapour\n", +"D=3.33*1e-30;\n", +"pHCL=1.04*D;\n", +"T=300;//tempreture in kelvin\n", +"alpha=(pHCL)^2/(3*k*T);\n", +"p0=N*alpha*E;//orientation polarization\n", +"disp('C/m^2',p0,'orientation polarization is=');" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 14.3: example_3.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"clc;\n", +"clear all;\n", +"alpha=0.35*1e-40;//polarizability of gas\n", +"N=2.7*1e25;\n", +"e0=8.854*1e-12;//permittivity of vacume\n", +"er=1+(N*alpha/e0);//relative permittivity\n", +"disp(er,'relative permittivity is=');" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 14.4: example_4.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"clc;\n", +"clear all;\n", +"er=12;//relative permittivity\n", +"N=5*1e28;//atoms/m^3\n", +"e0=8.854*1e-12;//permittivity of vacume\n", +"x=(er-1)/(er+2);\n", +"alpha=(3*e0/N)*x;//electrical polarizability\n", +"disp('F*m^2',alpha,'electrical polarizability');" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 14.5: example_5.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"clc;\n", +"clear all;\n", +"C=2.4*1e-12;//given capacitance in F\n", +"e0=8.854*1e-12;//permittivity of vacume\n", +"a=4*1e-4;//area in m^2\n", +"d=0.5*1e-2;//thickness\n", +"tandelta=0.02;\n", +"er=(C*d)/(e0*a);//relative permittivity\n", +"disp(er,'relative permittivity is=');\n", +"lf=er*tandelta;//loss factor\n", +"disp(lf,'electric loss factor is=');\n", +"delta=atan(0.02);\n", +"PA=90-delta;//phase angle\n", +"disp(PA,'phase angle is=');\n", +"//slight variation in ans than book.. checked in calculator also" + ] + } +, +{ + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example 14.6: example_6.sce" + ] + }, + { +"cell_type": "code", + "execution_count": null, + "metadata": { + "collapsed": true + }, + "outputs": [], +"source": [ +"clc;\n", +"clear all;\n", +"er=8;//relative permittivity\n", +"a=0.036;//area in m^2\n", +"e0=8.854*1e-12;//permittivity of vacume\n", +"C=6*1e-6;//capacitance in F\n", +"V=15;//potential difference\n", +"d=e0*er*a/C;\n", +"E=V/d;//field strength\n", +"disp('V/m',E,'field strength is=');\n", +"dpm=e0*(er-1)*E;//dipole moment/unit volume\n", +"disp('C/m^2',dpm,'dipole moment/unit volume=');\n", +"//slight variation in ans than book.. checked in calculator also(Mistake in textbook)" + ] + } +], +"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 +} |