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+{
+"cells": [
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "# Chapter 3: Electromagnetism"
+ ]
+ },
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 3.10: force.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"\n",
+"//determine the pull between poles and keeper\n",
+"A=15e-4\n",
+"B=1.2\n",
+"U=1\n",
+"F=2*B*B*A/(2*4*3.14*10^-7)\n",
+"disp('Total force='+string(F)+' N')"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 3.1: emf_induced.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"\n",
+"//calculate the emf induced in the coil\n",
+"N=200\n",
+"F1=1e-3\n",
+"F2=3e-3\n",
+"F3=F2-F1\n",
+"t=0.1\n",
+"e=N*F3/t //neglecting negative sign\n",
+"disp('induced emf= ' +string(e)+' volts')"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 3.2: emf_induced.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"\n",
+"//calculate the emf inducedin a long wire\n",
+"B=1.2;//weber/meter^2...flux density\n",
+"V=4;//meter/second..velocity of conductor\n",
+"l=2;//meter...lenght of \n",
+"e=(B*V*l*1)//sin90=1\n",
+"disp('emf induced in the conductor='+string(e)+'volt');"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 3.3: inductance_of_the_coil.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"\n",
+"//find the inductance of the coil\n",
+"N=1500;// number of turns\n",
+"I=10;//amp...current in coil\n",
+"F=.5*10^-3;//weber...flux \n",
+"L=N*F/I;\n",
+"disp('inductance of coil='+string(L)+'henry');"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 3.4: self_inductance.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"\n",
+"//P3.4 calculate its self induction \n",
+"\n",
+"Ur=1;\n",
+"N=400;\n",
+"l=30e-2;\n",
+"A=5e-4;\n",
+"U0=4e-7*%pi;\n",
+"S=l/(U0*Ur*A);\n",
+"L=N^2/S;\n",
+"disp('Self inductance is = '+string(L)+' henry','S = '+string(S));\n",
+""
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 3.5: inductance_and_emf_induced.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"\n",
+"//calculat the inductance and emf induced in the coil\n",
+"u=1 //air core torroidal ring\n",
+"D=25e-2\n",
+"l=3.14*D\n",
+"N=500\n",
+"d=4e-2 //cross sectional diameter\n",
+"A=(3.14*d*d)/4 //cross sectional area\n",
+"s=l/(4*3.14*10^-7*u*A)\n",
+"L=N^2/s // self inductance\n",
+"dI=10\n",
+"dt=50e-3\n",
+"e=(L*dI)/dt\n",
+"disp('Induced emf=' +string(e)+' volts' , 'Inductance = '+string(L)+' henry' )"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 3.6: inductance_and_emf_induced.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"\n",
+"//calculate the induced emf in the coil\n",
+"A=4e-4 //cross sectional is a squar side\n",
+"u=1 //air core torroidal ring\n",
+"D=25e-2\n",
+"l=3.14*D\n",
+"N=500\n",
+"d=4e-2 //cross sectional diameter\n",
+"s=l/(4*3.14*10^-7*u*A)\n",
+"L=N^2/s // self inductance\n",
+"dI=10\n",
+"dt=50e-3\n",
+"e=(L*dI)/dt\n",
+"disp('Induced emf=' +string(e)+' volts' , 'Inductance = '+string(L)+' henry' )"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 3.7: inductance_and_emf_induced.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"\n",
+"//calculate the induced emf in coil\n",
+"di=5\n",
+"dt=0.05\n",
+"L=5.029e-4\n",
+"di1=400\n",
+"dt1=1\n",
+"e=L*di/dt\n",
+"e1=L*di1/dt1\n",
+"disp('Induced emf= ' +string(e1)+' volts' , 'Induced emf= ' +string(e)+' volts')"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 3.8: mutual_inductance_and_emf_induced.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"\n",
+"////calculate the mutual inductance between the two coil\n",
+"N1=50\n",
+"N2=400\n",
+"A=150e-4\n",
+"l=200e-2\n",
+"u=2500\n",
+"s=l/(4*3.14*10^-7*A*u)\n",
+"M=(N1*N2)/s\n",
+"dI1=24\n",
+"dt=0.03\n",
+"eM2=M*dI1/dt\n",
+"disp('induced emf= '+string(eM2)+' volts' , 'Mutual inductance= '+string(M)+' henry' , 's='+string(s)+' AT/Wb')"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 3.9: energy_stored.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"\n",
+"//find the energy stored in it\n",
+"L=0.5\n",
+"I=2\n",
+"E=0.5*L*I*I\n",
+"disp('Energy stored= '+string(E)+' joule')"
+ ]
+ }
+],
+"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
+}
generated by cgit (git 2.34.1) at 2024-12-19 17:56:49 +0000