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+{
+"cells": [
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "# Chapter 1: DC circuits"
+ ]
+ },
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 1.10: Calculate_current.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Ex 1.10\n",
+"clc;clear;close;\n",
+"format('v',6);\n",
+"I1=2.5;//A\n",
+"I2=-1.5;//A\n",
+"//I1+I2+I3=0//from KCL\n",
+"I3=-I1-I2;//A\n",
+"disp(I3,'Current I3(A)');"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 1.11: Determine_the_currents.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Ex 1.11\n",
+"clc;clear;close;\n",
+"format('v',6);\n",
+"I1=3;//A\n",
+"I3=1;//A\n",
+"I6=1;//A\n",
+"//I1-I2-I3=0//from KCL at point a\n",
+"I2=I1-I3;//A\n",
+"//I2+I4-I6=0//from KCL at point b\n",
+"I4=I6-I2;//A\n",
+"//I3-I4-I5=0//from KCL at point c\n",
+"I5=I3-I4;//A\n",
+"disp(I2,'Current I2(A)');\n",
+"disp(I4,'Current I4(A)');\n",
+"disp(I5,'Current I5(A)');"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 1.12: Determine_I1_and_I2.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Ex 1.12\n",
+"clc;clear;close;\n",
+"format('v',6);\n",
+"R1=30;//ohm\n",
+"R2=60;//ohm\n",
+"R3=30;//ohm\n",
+"I3=1;//A\n",
+"I1=I3*(R2+R3)/R2;//A\n",
+"I2=I1-I3;//A\n",
+"disp(I1,'Current I1(A)');\n",
+"disp(I2,'Current I2(A)');"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 1.13: Determine_V1_and_V3.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Ex 1.13\n",
+"clc;clear;close;\n",
+"format('v',6);\n",
+"E=12;//V\n",
+"V2=8;//V\n",
+"V4=2;//V\n",
+"V1=E-V2;//V\n",
+"//-V2+V3+V4=0;//for Loop B\n",
+"V3=V2-V4;//V\n",
+"disp(V1,'Voltage V1(V)');\n",
+"disp(V3,'Voltage V3(V)');"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 1.14: Calculate_VAB.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Ex 1.14\n",
+"clc;clear;close;\n",
+"format('v',6);\n",
+"V=20;//V\n",
+"R1=25;//ohm\n",
+"R2=40;//ohm\n",
+"R3=15;//ohm\n",
+"R4=10;//ohm\n",
+"VAC=R3*V/(R1+R3);//V\n",
+"VBC=R4*V/(R2+R4);//V\n",
+"//0=VAB+VBC-VAC;///from KVL\n",
+"VAB=-VBC+VAC;//V\n",
+"disp(VAB,'Voltage VAB(V)');"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 1.15: Voltage_and_emf.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Ex 1.15\n",
+"clc;clear;close;\n",
+"format('v',6);\n",
+"E1=10;//V\n",
+"V2=6;//V\n",
+"V3=8;//V\n",
+"//E1=V1+V2;//KCL for left loop\n",
+"V1=E1-V2;//V\n",
+"//-E2=-V2-V3;//KCL for right loop\n",
+"E2=V2+V3;//V\n",
+"disp(V1,'Voltage V1(V)');\n",
+"disp(E2,'Voltage E2(V)');"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 1.1: Current_in_the_circuit.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Ex 1.1\n",
+"clc;clear;close;\n",
+"format('v',4);\n",
+"R=3;//kohm\n",
+"V=220;//V\n",
+"//First Case\n",
+"I=V/R;//mA\n",
+"disp(I,'1st case : Current in the circuit(mA)');\n",
+"//Second Case\n",
+"Req=R+R;//ohm(Equivalent resistance)\n",
+"I=V/Req;//mA\n",
+"disp(I,'2nd case : Current in the circuit(mA)');"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 1.2: Voltage_across_resistor.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Ex 1.2\n",
+"clc;clear;close;\n",
+"format('v',5);\n",
+"I=1.5;//A\n",
+"R1=2;//ohm\n",
+"R2=3;//ohm\n",
+"R3=8;//ohm\n",
+"V1=I*R1;//V\n",
+"V2=I*R2;//V\n",
+"V3=I*R3;//V\n",
+"disp(V1,'Voltage across R1(V)');\n",
+"disp(V2,'Voltage across R2(V)');\n",
+"disp(V3,'Voltage across R3(V)');\n",
+"V=V1+V2+V3;//V(Supply voltage)\n",
+"disp(V,'Supply Voltage(V)');"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 1.3: Circuit_current.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Ex 1.3\n",
+"clc;clear;close;\n",
+"format('v',6);\n",
+"Vs=100;//V(Supply voltage)\n",
+"R1=40;//ohm\n",
+"R2=50;//ohm\n",
+"R3=70;//ohm\n",
+"R=R1+R2+R3;//ohm(Equivalent resistance)\n",
+"I=Vs/R;//A(Current in the circuit)\n",
+"disp(I,'Circuit current(A)');"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 1.4: Resistance_R1.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Ex 1.4\n",
+"clc;clear;close;\n",
+"format('v',6);\n",
+"Vo=10;//V(Output voltage)\n",
+"Vin=30;//V(Input voltage)\n",
+"R2=100;//ohm\n",
+"//V2/V=R2/(R1+R2)//Voltage divider rule\n",
+"R1=(Vin*R2-Vo*R2)/Vo;//ohm\n",
+"disp(R1,'Resistance of R1(ohm)');"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 1.5: Supply_Current.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Ex 1.5\n",
+"clc;clear;close;\n",
+"format('v',6);\n",
+"V=110;//V\n",
+"R1=22;//ohm\n",
+"R2=44;//ohm\n",
+"I1=V/R1;//A\n",
+"I2=V/R2;//A\n",
+"I=I1+I2;//A\n",
+"disp(I,'Supply current(A)');"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 1.6: Effective_resistance_and_Supply_current.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Ex 1.6\n",
+"clc;clear;close;\n",
+"format('v',5);\n",
+"V=12;//V\n",
+"R1=6.8;//ohm\n",
+"R2=4.7;//ohm\n",
+"R3=2.2;//ohm\n",
+"R=1/(1/R1+1/R2+1/R3);//ohm(Effective resistance)\n",
+"I=V/R;//A(Supply current)\n",
+"disp(R,'Effective resistance(ohm)')\n",
+"disp(I,'Supply current(A)');"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 1.7: Current_in_the_resistor.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Ex 1.7\n",
+"clc;clear;close;\n",
+"format('v',4);\n",
+"I=8;//A\n",
+"R2=2;//ohm\n",
+"// Part (a) \n",
+"R1=2;//ohm\n",
+"I2=I*R1/(R1+R2);//A\n",
+"disp(I2,'(a) Current in 2 ohm resistance(A)');\n",
+"// Part (b) \n",
+"R1=4;//ohm\n",
+"I2=I*R1/(R1+R2);//A\n",
+"disp(I2,'(b) Current in 2 ohm resistance(A)');"
+ ]
+ }
+,
+{
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 1.8: Calculate_current.sce"
+ ]
+ },
+ {
+"cell_type": "code",
+ "execution_count": null,
+ "metadata": {
+ "collapsed": true
+ },
+ "outputs": [],
+"source": [
+"//Ex 1.8\n",
+"clc;clear;close;\n",
+"format('v',6);\n",
+"I1=3;//A\n",
+"I2=-4;//A\n",
+"I4=2;//A\n",
+"//I1-I2+I3-I4=0//from KCL\n",
+"I3=-I1+I2+I4;//A\n",
+"disp(I3,'Current I3(A)');"
+ ]
+ }
+],
+"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 2025-03-11 06:26:24 +0000