From 661fe2fe6784f49307382d2934200e0df5ba0c4b Mon Sep 17 00:00:00 2001 From: Trupti Kini Date: Sun, 7 Aug 2016 23:30:22 +0600 Subject: Added(A)/Deleted(D) following books A Solutions_to_Problems_in_Applied_Mechanics_by_A._N._Gobby/Chapter1.ipynb A Solutions_to_Problems_in_Applied_Mechanics_by_A._N._Gobby/Chapter10.ipynb A Solutions_to_Problems_in_Applied_Mechanics_by_A._N._Gobby/Chapter11.ipynb A Solutions_to_Problems_in_Applied_Mechanics_by_A._N._Gobby/Chapter12.ipynb A Solutions_to_Problems_in_Applied_Mechanics_by_A._N._Gobby/Chapter2.ipynb A Solutions_to_Problems_in_Applied_Mechanics_by_A._N._Gobby/Chapter3.ipynb A Solutions_to_Problems_in_Applied_Mechanics_by_A._N._Gobby/Chapter4.ipynb A Solutions_to_Problems_in_Applied_Mechanics_by_A._N._Gobby/Chapter5.ipynb A Solutions_to_Problems_in_Applied_Mechanics_by_A._N._Gobby/Chapter6.ipynb A Solutions_to_Problems_in_Applied_Mechanics_by_A._N._Gobby/Chapter7.ipynb A Solutions_to_Problems_in_Applied_Mechanics_by_A._N._Gobby/Chapter8.ipynb A Solutions_to_Problems_in_Applied_Mechanics_by_A._N._Gobby/Chapter9.ipynb A Solutions_to_Problems_in_Applied_Mechanics_by_A._N._Gobby/screenshots/chapter1.png A Solutions_to_Problems_in_Applied_Mechanics_by_A._N._Gobby/screenshots/chapter2.png A Solutions_to_Problems_in_Applied_Mechanics_by_A._N._Gobby/screenshots/chapter3.png A Theory_of_Alternating_Current_Machinery_by_A._S._Langsdorf/Chapter1.ipynb A Theory_of_Alternating_Current_Machinery_by_A._S._Langsdorf/Chapter10.ipynb A Theory_of_Alternating_Current_Machinery_by_A._S._Langsdorf/Chapter16.ipynb A Theory_of_Alternating_Current_Machinery_by_A._S._Langsdorf/Chapter2.ipynb A Theory_of_Alternating_Current_Machinery_by_A._S._Langsdorf/Chapter3.ipynb A Theory_of_Alternating_Current_Machinery_by_A._S._Langsdorf/screenshots/chapter1.png A Theory_of_Alternating_Current_Machinery_by_A._S._Langsdorf/screenshots/chapter2.png A Theory_of_Alternating_Current_Machinery_by_A._S._Langsdorf/screenshots/chapter3.png A modern_physics_by_Satish_K._Gupta/chap10_1.ipynb A modern_physics_by_Satish_K._Gupta/chap11_1.ipynb A modern_physics_by_Satish_K._Gupta/chap12_1.ipynb A modern_physics_by_Satish_K._Gupta/chap13_1.ipynb A modern_physics_by_Satish_K._Gupta/chap14_1.ipynb A modern_physics_by_Satish_K._Gupta/chap15_1.ipynb A modern_physics_by_Satish_K._Gupta/chap16_1.ipynb A modern_physics_by_Satish_K._Gupta/chap17_1.ipynb A modern_physics_by_Satish_K._Gupta/chap18_1.ipynb A modern_physics_by_Satish_K._Gupta/chap19_1.ipynb A modern_physics_by_Satish_K._Gupta/chap1_1.ipynb A modern_physics_by_Satish_K._Gupta/chap20_1.ipynb A modern_physics_by_Satish_K._Gupta/chap21_1.ipynb A modern_physics_by_Satish_K._Gupta/chap22_1.ipynb A modern_physics_by_Satish_K._Gupta/chap23_1.ipynb A modern_physics_by_Satish_K._Gupta/chap25_1.ipynb A modern_physics_by_Satish_K._Gupta/chap26_1.ipynb A modern_physics_by_Satish_K._Gupta/chap27_1.ipynb A modern_physics_by_Satish_K._Gupta/chap28_1.ipynb A modern_physics_by_Satish_K._Gupta/chap2_1.ipynb A modern_physics_by_Satish_K._Gupta/chap30_1.ipynb A modern_physics_by_Satish_K._Gupta/chap31_1.ipynb A modern_physics_by_Satish_K._Gupta/chap32_1.ipynb A modern_physics_by_Satish_K._Gupta/chap33_1.ipynb A modern_physics_by_Satish_K._Gupta/chap34_1.ipynb A modern_physics_by_Satish_K._Gupta/chap35_1.ipynb A modern_physics_by_Satish_K._Gupta/chap36_1.ipynb A modern_physics_by_Satish_K._Gupta/chap37_1.ipynb A modern_physics_by_Satish_K._Gupta/chap3_1.ipynb A modern_physics_by_Satish_K._Gupta/chap4_1.ipynb A modern_physics_by_Satish_K._Gupta/chap5_1.ipynb A modern_physics_by_Satish_K._Gupta/chap6_1.ipynb A modern_physics_by_Satish_K._Gupta/chap7_1.ipynb A modern_physics_by_Satish_K._Gupta/chap8_1.ipynb A modern_physics_by_Satish_K._Gupta/chap9_1.ipynb A modern_physics_by_Satish_K._Gupta/chap_29_1.ipynb A modern_physics_by_Satish_K._Gupta/screenshots/image1_1.png A modern_physics_by_Satish_K._Gupta/screenshots/image22_1.png A modern_physics_by_Satish_K._Gupta/screenshots/image33_1.png A sample_notebooks/RuchiMittal/chpater3.ipynb --- modern_physics_by_Satish_K._Gupta/chap16_1.ipynb | 964 +++++++++++++++++++++++ 1 file changed, 964 insertions(+) create mode 100644 modern_physics_by_Satish_K._Gupta/chap16_1.ipynb (limited to 'modern_physics_by_Satish_K._Gupta/chap16_1.ipynb') diff --git a/modern_physics_by_Satish_K._Gupta/chap16_1.ipynb b/modern_physics_by_Satish_K._Gupta/chap16_1.ipynb new file mode 100644 index 00000000..a6266584 --- /dev/null +++ b/modern_physics_by_Satish_K._Gupta/chap16_1.ipynb @@ -0,0 +1,964 @@ +{ + "metadata": { + "name": "", + "signature": "sha256:03e25d70b6f5039934ebff67f76c18265eda838017719c81d51174de65a0d0cb" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 1, + "metadata": {}, + "source": [ + "Chapter 16 Electromagnetic induction" + ] + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 16.1 Page no 508" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Given\n", + "R=5.0 #ohm\n", + "t=2\n", + "a=15\n", + "b=8\n", + "\n", + "#Calculation\n", + "e=-a*t**2-(b*t)-t\n", + "I=-e/R\n", + "\n", + "#Result\n", + "print\"Induced current is\", I,\"A\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Induced current is 15.6 A\n" + ] + } + ], + "prompt_number": 6 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 16.2 Page no 508" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Given\n", + "S1=75*10**-4 #m**2\n", + "B1=0.8 #wb/m**2\n", + "S2=100*10**-4\n", + "B2=1.4\n", + "t=0.05\n", + "\n", + "#Calculation\n", + "a1=B1*S1\n", + "a2=B2*S2\n", + "a=a2-a1\n", + "e=-a/t\n", + "\n", + "#Result\n", + "print\"Induced e.m.f is\", e,\"Volt\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Induced e.m.f is -0.16 Volt\n" + ] + } + ], + "prompt_number": 9 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 16.3 Page no 508" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Given\n", + "a1=5.5*10**-4 #Wb\n", + "a2=0.5*10**-4\n", + "N=1000\n", + "t=0.1\n", + "R=10 #ohm\n", + "\n", + "#Calculation\n", + "a=a2-a1\n", + "a11=N*a\n", + "e=-(a11/t)\n", + "I1=e/R\n", + "I2=I1*t\n", + "\n", + "#Result\n", + "print\" Induced e.m.f produced is\",e,\"V\"\n", + "print\" Charge flowing through the coil in 0.1 is\",I2,\"C\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + " Induced e.m.f produced is 5.0 V\n", + " Charge flowing through the coil in 0.1 is 0.05 C\n" + ] + } + ], + "prompt_number": 27 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 16.5 Page no 509" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Given\n", + "B=2.5*10**-3 #Wb**-2\n", + "L=1 #m\n", + "v=30 #r.p.s\n", + "\n", + "#Calculation\n", + "import math\n", + "e=-B*math.pi*L**2*v\n", + "\n", + "#Result\n", + "print\"The produced e.m.f. between its ends is\",round(e,3),\"V\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The produced e.m.f. between its ends is -0.236 V\n" + ] + } + ], + "prompt_number": 31 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 16.6 Page no 509" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Given\n", + "L=1.2 #m\n", + "e=10**-2 #v\n", + "B=5*10**-5 #tesla\n", + "\n", + "#Calculation\n", + "import math\n", + "V=e/(B*math.pi*L**2)\n", + "\n", + "#Result\n", + "print\"The rate of rotation of the wheel is\",round(V,1),\"Rotation a**-1\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The rate of rotation of the wheel is 44.2 Rotation a**-1\n" + ] + } + ], + "prompt_number": 37 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 16.7 Page no 509" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Given\n", + "D=10\n", + "L=0.50 #m\n", + "B=0.40*10**-4 #T\n", + "V=2 #r.p.s.\n", + "\n", + "#Calculation\n", + "import math\n", + "E=-B*math.pi*L**2*V\n", + "\n", + "#Result\n", + "print\"The induced e.m.f. between the axle and the rim of the wheel is\",round(E*10**5,3),\"10**-5\",\"V\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The induced e.m.f. between the axle and the rim of the wheel is -6.283 10**-5 V\n" + ] + } + ], + "prompt_number": 45 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 16.8 Page no 509" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Given\n", + "B=0.2 #T\n", + "r=0.1 #m\n", + "R=2 #ohm\n", + "D=20*math.pi #rad s**-1\n", + "\n", + "#Calculation\n", + "import math\n", + "V=D/(2*math.pi)\n", + "E=-B*math.pi*r**2*V\n", + "I=E/R\n", + "\n", + "#Result\n", + "print\"(i) The potential difference is\",round(E,4),\"V\"\n", + "print\"(ii) The induced current is\",round(I,4),\"A\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "(i) The potential difference is -0.0628 V\n", + "(ii) The induced current is -0.0314 A\n" + ] + } + ], + "prompt_number": 56 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 16.9 Page no 509" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Given\n", + "B=8.0*10**-5 #Wb m**-2\n", + "L=2 #m\n", + "v=30 #m s**-1\n", + "\n", + "#Calculation\n", + "e=B*L*v\n", + "\n", + "#Result\n", + "print\"The vertical component of earth's field is\",e*10**3,\"10**-3\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The vertical component of earth's field is 4.8 10**-3\n" + ] + } + ], + "prompt_number": 61 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 16.10 Page no 509" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Givem\n", + "l=10 #m\n", + "v=5 #m/s\n", + "Bh=0.30*10**-4 #Wb/m**2\n", + "\n", + "#Calculation\n", + "e=Bh*l*v\n", + "\n", + "#Result\n", + "print \"Instantaneous value of e.m.f. induced is\",e*10**3,\"*10**-3 V\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Instantaneous value of e.m.f. induced is 1.5 *10**-3 V\n" + ] + } + ], + "prompt_number": 64 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 16.11 Page no 509" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Given\n", + "B=0.3 #T\n", + "v=10**-2 #m/s\n", + "l=8*10**-2\n", + "L=1\n", + "v1=1.0\n", + "l2=2*10**-2\n", + "L1=8\n", + "\n", + "#Calculation\n", + "e=B*l*v\n", + "l=L/v1\n", + "e1=B*l2*v\n", + "t1=L1/v1\n", + "\n", + "#Result\n", + "print\"(i) Voltage developed in the direction of motion normal to the longer side is\", e*10**3,\"mv\"\n", + "print\"(ii) Voltage developed in the direction of motion normal to the shorter side is\",e1*10**3,\"mV\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "(i) Voltage developed in the direction of motion normal to the longer side is 0.24 mv\n", + "(ii) Voltage developed in the direction of motion normal to the shorter side is 0.06 mV\n" + ] + } + ], + "prompt_number": 72 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 16.12 Page no 510" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Given\n", + "B=0.4 #T\n", + "v=5 #m/s\n", + "l=0.25 #m\n", + "e=0.5\n", + "R=5.0\n", + "\n", + "#Calculation\n", + "e=B*l*v\n", + "I=e/R\n", + "\n", + "#Result\n", + "print\"New current is\",I,\"A\"\n", + "print\"Direction is from the end S to R\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "New current is 0.1 A\n", + "Direction is from the end S to R\n" + ] + } + ], + "prompt_number": 75 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 16.13 Page no 510" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Given\n", + "v=500 #m/s\n", + "B=5*10**-4 #t\n", + "a=30 #degree\n", + "l=25 #m\n", + "\n", + "#Calculation\n", + "import math\n", + "Bv=B*math.sin(a*3.14/180.0)\n", + "e=Bv*l*v\n", + "\n", + "#Result\n", + "print\"Voltage difference is\", round(e,3),\"V\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Voltage difference is 3.124 V\n" + ] + } + ], + "prompt_number": 80 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 16.14 Page no 510" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Given\n", + "L=10*10**-3 #H\n", + "I=4*10**-3 #A\n", + "N=200.0\n", + "\n", + "#Calculation\n", + "a=L*I\n", + "A=a/N\n", + "\n", + "#Result\n", + "print\"Total magnetic flux is\",a,\"Weber\"\n", + "print\"Magnetic flux through the cross section is\",A,\"Weber\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Total magnetic flux is 4e-05 Weber\n", + "Magnetic flux through the cross section is 2e-07 Weber\n" + ] + } + ], + "prompt_number": 85 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 16.15 Page no 510" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Given\n", + "L=10**-2 #H\n", + "I1=0\n", + "I2=1 #A\n", + "l=1 \n", + "t=0.01\n", + "\n", + "#Calculation\n", + "e=-L*(l/t)\n", + "\n", + "#Result\n", + "print\"Self induced e.m.f is\", e,\"V\"\n", + "print\"The self-induced e.m.f. will act so as to oppose the growth of current.\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Self induced e.m.f is -1.0 V\n", + "The self-induced e.m.f. will act so as to oppose the growth of current.\n" + ] + } + ], + "prompt_number": 89 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 16.16 Page no 510" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Given\n", + "n=1500 #turns/m\n", + "A=2*10**-4 #m**2\n", + "l=20 #A/s\n", + "\n", + "#Calculation\n", + "import math\n", + "e=-4*math.pi*n*A*l*10**-7\n", + "\n", + "#Result\n", + "print\"Induced e.m.f. is\",round(e*10**6,2)*10**-6,\"V\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Induced e.m.f. is -7.54e-06 V\n" + ] + } + ], + "prompt_number": 97 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 16.17 Page no 511" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Given\n", + "e=50*10**-3 #V\n", + "a=8\n", + "b=4\n", + "t=0.5\n", + "\n", + "#Calculation\n", + "l=a-b\n", + "M=e*t/l\n", + "\n", + "#Result\n", + "print\"Mutual inductance is\",M*10**3,\"*10**-3 H\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Mutual inductance is 6.25 *10**-3 H\n" + ] + } + ], + "prompt_number": 101 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 16.18 Page no 511" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Given\n", + "n1=5000 #turns/m\n", + "A=4*10**-4 #m**2\n", + "n2l=200\n", + "u=10**-7\n", + "\n", + "#Calculation\n", + "import math\n", + "M=4*math.pi*u*n1*n2l*A\n", + "\n", + "#Result\n", + "print\"Mutual inductance is\", round(M*10**4,3),\"*10**-4 H\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Mutual inductance is 5.027 *10**-4 H\n" + ] + } + ], + "prompt_number": 109 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 16.19 Page no 511" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Given\n", + "N=1200\n", + "A=12*10**-4\n", + "r=15*10**-2 #m\n", + "u=10**-7\n", + "I=1.0\n", + "N2=300\n", + "I1=0\n", + "I2=2\n", + "t=0.05\n", + "\n", + "#Calculation\n", + "import math\n", + "n=N/(2*math.pi*r)\n", + "B=4*math.pi*u*n\n", + "a=B*A*N\n", + "L=a/I\n", + "a1=B*A*N2\n", + "a11=a1*I1\n", + "a12=a1*I2\n", + "a13=a12-a11\n", + "e=-a13/t\n", + "\n", + "#Result\n", + "print\"(a) Self inductance is\", L*10**3,\"*10**-3 H\"\n", + "print\"(b) Induced e.m.f is\", round(e,3),\"V\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "(a) Self inductance is 2.304 *10**-3 H\n", + "(b) Induced e.m.f is -0.023 V\n" + ] + } + ], + "prompt_number": 124 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 16.20 Page no 511" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Given\n", + "A=25*10**-4\n", + "N=500\n", + "l=30.0*10**-2 #m\n", + "I=2.5\n", + "u=10**-7\n", + "t=10.0**-3\n", + "\n", + "#Calculation\n", + "import math\n", + "n=N/l\n", + "B=4*math.pi*u*n*I\n", + "a=B*A*N\n", + "a1=0-a\n", + "e=-a1/t\n", + "\n", + "#Result\n", + "print\"Average induced e.m.f. produced is\", round(e,3),\"V\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Average induced e.m.f. produced is 6.545 V\n" + ] + } + ], + "prompt_number": 130 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 16.21 Page no 511" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Given\n", + "N=25.0\n", + "A=2*10**-4 #m**2\n", + "q=7.5*10**-3\n", + "R=0.50\n", + "\n", + "#Calculation\n", + "B=R*q/(N*A)\n", + "\n", + "#Result\n", + "print\"Field strength of the magnet is\" ,B,\"T\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Field strength of the magnet is 0.75 T\n" + ] + } + ], + "prompt_number": 136 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 16.22 Page no 512" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Given\n", + "B=0.50 #T\n", + "l=15*10**-2 #m\n", + "R=9.0*10**-3 #ohm\n", + "v=12*10**-2 #m/s\n", + "\n", + "#Calculation\n", + "e=B*v*l\n", + "F=B*l*(e/R)\n", + "P=F*v\n", + "P1=e**2/R\n", + "\n", + "#Result\n", + "print\"(a) Induced e.m.f is\", e*10**3,\"*10**3 V\"\n", + "print\"The end P of the rod will become positive and the end Q will become negative\"\n", + "print\"(b) on closing the switch, electrons collects at the end Q. Therefore , excess charge is built up i.e it doesn't open when switch is open\" \n", + "print\"(c) The magnetic lorentz force on electron is cancelled due to the electric field set up across the two end\"\n", + "print\"(d) Retarding force is\",F*10**2,\"*10**-2 N\"\n", + "print\"(e) Power is\",P*10**3,\"*10*-3 W\"\n", + "print\"(f) Dissipated power is\",P*10**3,\"*10**-3 W\"\n", + "print\"(g) The motion of the rod does not cut field lines,hence no induced e.m.f. is produced\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "(a) Induced e.m.f is 9.0 *10**3 V\n", + "The end P of the rod will become positive and the end Q will become negative\n", + "(b) on closing the switch, electrons collects at the end Q. Therefore , excess charge is built up i.e it doesn't open when switch is open\n", + "(c) The magnetic lorentz force on electron is cancelled due to the electric field set up across the two end\n", + "(d) Retarding force is 7.5 *10**-2 N\n", + "(e) Power is 9.0 *10*-3 W\n", + "(f) Dissipated power is 9.0 *10**-3 W\n", + "(g) The motion of the rod does not cut field lines,hence no induced e.m.f. is produced\n" + ] + } + ], + "prompt_number": 156 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 16.23 Page no 512" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Given\n", + "a1=20*10**-2\n", + "a2=0.3*10**-2 #m\n", + "x=15*10**-2\n", + "I=2.0 #A\n", + "u=10**-7\n", + "\n", + "#Calculation\n", + "import math\n", + "B1=u*2*math.pi*I*a1**2/((a1**2+x**2)**1.5)\n", + "a=B1*math.pi*a2**2\n", + "M=a/I\n", + "\n", + "#Result\n", + "print\"(a) Flux is\", round(B1*10**6,3)*10**-6 ,\"T\"\n", + "print\"(b) Mutual inductance is\",round(M*10**11,3)*10**-11,\"H\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "(a) Flux is 3.217e-06 T\n", + "(b) Mutual inductance is 4.548e-11 H\n" + ] + } + ], + "prompt_number": 168 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 16.25 Page no 513" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "#Given\n", + "N1=1500\n", + "l1=80.0*10**-2\n", + "l2=4*10**-2\n", + "r2=2*10**-2\n", + "I=3.0 #A\n", + "\n", + "#Calculation\n", + "import math\n", + "A2=math.pi*r**2\n", + "n1=N1/l1\n", + "a=4*math.pi*10**-7*n1*I*4*math.pi*10**-4*100\n", + "M=a/I\n", + "\n", + "#Result\n", + "print\"Flux is\",round( a*10**4,3),\"*10**-4 Wb\"\n", + "print\"Mutual inductance is\",round(M*10**4,2),\"*10**-4 H\"" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Flux is 8.883 *10**-4 Wb\n", + "Mutual inductance is 2.96 *10**-4 H\n" + ] + } + ], + "prompt_number": 181 + } + ], + "metadata": {} + } + ] +} \ No newline at end of file -- cgit