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{
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{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Chapter 19:Electromagnetic Induction"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Ex19.1:pg-938"
]
},
{
"cell_type": "code",
"execution_count": 0,
"metadata": {
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},
"outputs": [],
"source": [
" #Example 19_1\n",
" \n",
" \n",
" #To find the flux in the room\n",
"l=4 #Units in meters\n",
"b=0.8 #Units in meters\n",
"theta=20 #Units in degrees\n",
"a=l*b #Units in meters**2\n",
"b=4*10**-5 #Units in T\n",
"thetaa=math.cos(theta*math.pi/180) #Units in radians\n",
"phi=b*thetaa*a #Units in T meters**2\n",
"print \"The flux in the room is Phi=\",round( ,5),\" T meters**2\",phi)\n"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Ex19.2:pg-939"
]
},
{
"cell_type": "code",
"execution_count": 0,
"metadata": {
"collapsed": false
},
"outputs": [],
"source": [
" #Example 19_2\n",
" \n",
" \n",
" #To find how large is the average EMF induced\n",
"b=0.5 #Units in T\n",
"a=4*10**-4 #Units in meters**2\n",
"phi2=b*a #Units in Wb\n",
"phi1=0 #Units in Wb\n",
"deltaPHI=phi2-phi1 #Units in Wb\n",
"n=100 #Units in Constant\n",
"deltaT=2*10**-2 #Units in sec\n",
"emf=(n*deltaPHI)/deltaT #Units in V\n",
"print \"The average emf Induced is emf=\",round( ),\" V\",emf)\n"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Ex19.3:pg-939"
]
},
{
"cell_type": "code",
"execution_count": 0,
"metadata": {
"collapsed": false
},
"outputs": [],
"source": [
" #Example 19_3\n",
" \n",
" \n",
" #To findout how large an emf is generated\n",
"m=0.5 #Units in H\n",
"i=1 #Units in A\n",
"t=0.01 #Units in sec\n",
"emf=m*(i/t) #Units in V\n",
"print \"The emf generated is emf=\",round( ),\" V\",emf)\n"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Ex19.4:pg-939"
]
},
{
"cell_type": "code",
"execution_count": 0,
"metadata": {
"collapsed": false
},
"outputs": [],
"source": [
" #Example 19_4\n",
" \n",
" \n",
" #To Calculate the value of selfinductance\n",
"print \"The Self Inductance is L=Uo*n**2*D*A\")\n"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Ex19.5:pg-939"
]
},
{
"cell_type": "code",
"execution_count": 0,
"metadata": {
"collapsed": false
},
"outputs": [],
"source": [
" #Example 19_5\n",
" \n",
" \n",
" #To find the time constant of the circuit and the final energy stored\n",
"l=0.5 #Units in H\n",
"r1=2 #Units in Ohms\n",
"r2=4 #Units in Ohms\n",
"r=r1+r2 #Units in Ohms\n",
"l_r=l/r #Units in sec\n",
"i=2 #Units in A\n",
"ene=0.5*l*i**2\n",
"print \"The time constant is L/R=\",round( ,4),\" Sec\\n The energy stored is=\",round( ),\" J\",l_r,ene)\n"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Ex19.6:pg-940"
]
},
{
"cell_type": "code",
"execution_count": 2,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"The emf induced in the rod is emf= 0.000542 V\n"
]
}
],
"source": [
" #Example 19_6\n",
"import math \n",
"#To find the emf induced in the rod\n",
"b=0.6*10**-4 #Units in T\n",
"v=3 #Units in meters/sec\n",
"d=5 #Units in meters\n",
"theta=53 #Units in degrees\n",
"thetaa=math.cos(theta*math.pi/180) #Units in radians\n",
"emf=b*v*d*thetaa #Units in V\n",
"print \"The emf induced in the rod is emf=\",round(emf,6),\" V\"\n"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Ex19.7:pg-940"
]
},
{
"cell_type": "code",
"execution_count": 3,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"The back emf developed is EMF= 104.0 V\n"
]
}
],
"source": [
" #Example 19_7\n",
" \n",
" \n",
"#To calculate the Back emf developed\n",
"i=3 #Units in A\n",
"r=2.0 #Units in Ohms\n",
"v=110.0 #Units in Ohms\n",
"e=v-(i*r) #Units in V\n",
"print \"The back emf developed is EMF=\",round(e),\" V\"\n"
]
}
],
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|
