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diff --git a/Grobs_Basic_Electronics_by_M_E_Schultz/Chapter3.ipynb b/Grobs_Basic_Electronics_by_M_E_Schultz/Chapter3.ipynb new file mode 100755 index 00000000..099cbe37 --- /dev/null +++ b/Grobs_Basic_Electronics_by_M_E_Schultz/Chapter3.ipynb @@ -0,0 +1,636 @@ +{ + "cells": [ + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "# Chapter 3 : Ohm's Law" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example No. 3_1 Page No. 88" + ] + }, + { + "cell_type": "code", + "execution_count": 1, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "The Current I = 15.00 Amps\n" + ] + } + ], + "source": [ + "# A heater with the resistance of 8 Ohms\u0003 is connected across the 120-V power line. How much is current I?\n", + "\n", + "# Given data\n", + "\n", + "V = 120# # Voltage of Power line=120 Volts\n", + "R = 8# # Heater Resistance=8 Ohms\n", + "\n", + "I = V/R#\n", + "print 'The Current I = %0.2f Amps'%I" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example No. 3_2 Page No. 88" + ] + }, + { + "cell_type": "code", + "execution_count": 3, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "The Current I = 0.05 Amps\n" + ] + } + ], + "source": [ + "# A small lightbulb with a resistance of 2400 Ohms\u0003 is connected across the 120-V power line. How much is current I?\n", + "\n", + "# Given data\n", + "\n", + "V = 120.# # Voltage of Power line=120 Volts\n", + "R = 2400# # Lightbulb Resistance=2400 Ohms\n", + "\n", + "I = V/R#\n", + "print 'The Current I = %0.2f Amps'%I" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example No. 3_3 Page No. 88" + ] + }, + { + "cell_type": "code", + "execution_count": 4, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "The Voltage = 30.00 Volts\n" + ] + } + ], + "source": [ + "# If a 12-Ohms\u0003 resistor is carrying a current of 2.5 A, how much is its voltage?\n", + "\n", + "# Given data\n", + "\n", + "I = 2.5# # Current=2.5 Amps\n", + "R = 12# # Resistance=12 Ohms\n", + "\n", + "V = I*R#\n", + "print 'The Voltage = %0.2f Volts'%V" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example No. 3_4 Page No. 89" + ] + }, + { + "cell_type": "code", + "execution_count": 5, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "The Resistance = 75.00 ohms\n" + ] + } + ], + "source": [ + "# How much is the resistance of a lightbulb if it draws 0.16 A from a 12-V battery?\n", + "\n", + "# Given data\n", + "\n", + "V = 12# # Voltage of Battery=12 Volts\n", + "I = 0.16# # Current drawn form Battery=0.16 Amps\n", + "\n", + "R = V/I\n", + "print 'The Resistance = %0.2f ohms'%R" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example No. 3_5 Page No. 89" + ] + }, + { + "cell_type": "code", + "execution_count": 6, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "The Voltage = 40.00 Volts\n" + ] + } + ], + "source": [ + "# The I of 8 mA flows through a 5-kOhms Resistor. How much is the IR voltage?\n", + "\n", + "# Given data\n", + "\n", + "I = 8*10**-3# # Current flowing through Resistor=8m Amps\n", + "R = 5*10**3# # Resistance=5k Ohms\n", + "\n", + "V = I*R#\n", + "print 'The Voltage = %0.2f Volts'%V" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example No. 3_6 Page No. 90" + ] + }, + { + "cell_type": "code", + "execution_count": 8, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "The Current I = 0.005 Amps\n", + "i.e 5 mAmps\n" + ] + } + ], + "source": [ + "# How much current is produced by 60 V across 12 kOhms?\n", + "\n", + "# Given data\n", + "\n", + "V = 60.0# # Voltage=60 Volts\n", + "R = 12*10**3# # Resistance=12k Ohms\n", + "\n", + "I = V/R#\n", + "print 'The Current I = %0.3f Amps'%I\n", + "print 'i.e 5 mAmps'" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example No. 3_7 Page No. 91" + ] + }, + { + "cell_type": "code", + "execution_count": 9, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "The Power used = 1200.00 Watts\n", + "OR 1.2 kW\n" + ] + } + ], + "source": [ + "# A toaster takes 10 A from the 120-V power line. How much power is used?\n", + "\n", + "# Given data\n", + "\n", + "V = 120# # Voltage of Power line=120 Volts\n", + "I = 10# # Current drawn from Powerline=10 Amps\n", + "\n", + "P = V*I#\n", + "print 'The Power used = %0.2f Watts'%P\n", + "print 'OR 1.2 kW'" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example No. 3_8 Page No. 91" + ] + }, + { + "cell_type": "code", + "execution_count": 11, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "The Current I = 2.50 Amps\n" + ] + } + ], + "source": [ + "# How much current flows in the filament of a 300-W bulb connected to the 120-V power line?\n", + "\n", + "# Given Data\n", + "\n", + "V = 120.0# # Voltage of Power line=120 Volts\n", + "P = 300# # Power of Bulb=300 Watts\n", + "\n", + "I = P/V#\n", + "print 'The Current I = %0.2f Amps'%I" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example No. 3_9 Page No. 91" + ] + }, + { + "cell_type": "code", + "execution_count": 13, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "The Current I = 0.50 Amps\n", + "OR 500 mA\n" + ] + } + ], + "source": [ + "# How much current flows in the filament of a 60-W bulb connected to the 120-V power line?\n", + "\n", + "# Given Data\n", + "\n", + "V = 120# # Voltage of Power line=120 Volts\n", + "P = 60.0# # Power of Bulb=60 Watts\n", + "\n", + "I = P/V#\n", + "print 'The Current I = %0.2f Amps'%I\n", + "print 'OR 500 mA'" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example No. 3_10 Page No. 93" + ] + }, + { + "cell_type": "code", + "execution_count": 14, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "Cost = 4.32 $\n" + ] + } + ], + "source": [ + "# Asuming that the cost of electricity is 6 cent per kWh, how much will it cost to light a 100-W lightbulb for 30 days?\n", + "\n", + "h = 24*30# # Total hours = 24 hrs * 30 days\n", + "\n", + "kWh = 0.1*h# # 100W=0.1kW\n", + "\n", + "Cost = kWh*0.06# # 6 cent = $0.06\n", + "\n", + "print 'Cost = %0.2f $'%Cost" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example No. 3_11 Page No. 95" + ] + }, + { + "cell_type": "code", + "execution_count": 15, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "The Power = 200.00 Watts\n" + ] + } + ], + "source": [ + "# Calculate the power in a circuit where the source of 100 V produces 2 A in a 50 Ohms Resistor.\n", + "\n", + "# Given data\n", + "\n", + "I = 2# # Current=2 Amps\n", + "R = 50# # Resistance=50 Ohms\n", + "V = 100# # Voltage Source=100 Volts\n", + "\n", + "P = I*I*R#\n", + "print 'The Power = %0.2f Watts'%P" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example No. 3_12 Page No. 95" + ] + }, + { + "cell_type": "code", + "execution_count": 17, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "The Power = 400.00 Watts\n" + ] + } + ], + "source": [ + " \n", + "# Calculate the power in a circuit where the source of 100 V produces 4 A in a 25 Ohms Resistor.\n", + "\n", + "# Given data\n", + "\n", + "I = 4# # Current=4 Amps\n", + "R = 25# # Resistance=25 Ohms\n", + "V = 100# # Voltage Source=100 Volts\n", + "\n", + "P = I*I*R#\n", + "print 'The Power = %0.2f Watts'%P" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example No. 3_13 Page No. 96" + ] + }, + { + "cell_type": "code", + "execution_count": 18, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "The Current I = 5.00 Amps\n" + ] + } + ], + "source": [ + "# How much current is needed for a 600-W, 120-V toaster?\n", + "\n", + "# Given data\n", + "\n", + "V = 120.0# # Applied Voltage=120 Volts\n", + "P = 600# # Power of toaster=600 Watts\n", + "\n", + "I = P/V#\n", + "print 'The Current I = %0.2f Amps'%I" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example No. 3_14 Page No. 97" + ] + }, + { + "cell_type": "code", + "execution_count": 20, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "The Resistance = 24.00 Ohms\n" + ] + } + ], + "source": [ + "# How much is the resistance of a 600-W, 120-V toaster?\n", + "\n", + "# Given data\n", + "\n", + "V = 120.0# # Applied Voltage=120 Volts\n", + "P = 600# # Power of toaster=600 Watts\n", + "\n", + "R = (V*V)/P#\n", + "print 'The Resistance = %0.2f Ohms'%R" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example No. 3_15 Page No. 97" + ] + }, + { + "cell_type": "code", + "execution_count": 21, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "The Current I = 5.00 Amps\n" + ] + } + ], + "source": [ + "from math import sqrt\n", + "# How much current is needed for a 24 Ohms\u0003 Resistor that dissipates 600 W?\n", + "\n", + "# Given data\n", + "\n", + "R = 24.0# # Resistance=24 Ohms\n", + "P = 600.0# # Power=600 Watts\n", + "\n", + "I = sqrt(P/R)#\n", + "print 'The Current I = %0.2f Amps'%I" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example No. 3_16 Page No. 98" + ] + }, + { + "cell_type": "code", + "execution_count": 23, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "The Resistor value = 1500.00 Ohms\n", + "i.e 1.5 kohms\n", + "The Power = 0.60 Watts\n", + "OR 600 mW\n" + ] + } + ], + "source": [ + "# Determine the required resistance and appropriate wattage rating of a resistor to meet the following requirements: The resistor must have a 30-V IR drop when its current is 20 mA. The resistors available have the following wattage ratings: 1⁄8, 1⁄4, 1⁄2, 1, and 2 W.\n", + "\n", + "# Given data\n", + "\n", + "I = 20.0*10**-3# # Current=20m Amps\n", + "V = 30.0# # Voltage Drop=30 Volts\n", + "\n", + "R = V/I#\n", + "print 'The Resistor value = %0.2f Ohms'%R\n", + "print 'i.e 1.5 kohms'\n", + "\n", + "P = I*I*R#\n", + "print 'The Power = %0.2f Watts'%P\n", + "print 'OR 600 mW'\n" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## Example No. 3_17 Page No. 99" + ] + }, + { + "cell_type": "code", + "execution_count": 28, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "The Resistor value = 1500000 Ohms\n", + "i.e 1.5 Mohms\n", + "The Power = 0.03375 Watts\n", + "i.e 33.75 mW\n" + ] + } + ], + "source": [ + "#Determine the required resistance and appropriate wattage rating of a carbonfilm resistor to meet the following requirements: The resistor must have a 225-V IR drop when its current is 150 uA. The resistors available have the following wattage ratings: 1⁄8, 1⁄4, 1⁄2, 1, and 2 W.\n", + "\n", + "# Given data\n", + "\n", + "I = 150.0*10**-6# # Current=150 uAmps\n", + "V = 225# # Voltage Drop=225 Volts\n", + "\n", + "R = V/I#\n", + "print 'The Resistor value = %0.f Ohms'%R\n", + "print 'i.e 1.5 Mohms'\n", + "\n", + "P = I*I*R#\n", + "print 'The Power = %0.5f Watts'%P\n", + "print 'i.e 33.75 mW'" + ] + } + ], + "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": "2.7.9" + } + }, + "nbformat": 4, + "nbformat_minor": 0 +} |