How to memorize maxwell equation?
926730
maxwell eqn \nther is no need to rember  it 's of no use\n till you pass out of school\nbandwidth it's the range of length within \nwhich any elctromagnetic wave may fall or lie in like the bandwidth for visible light 400 nanometers to 700 nanometers
1100598
voltage = current x resistance\nE = I x R  It IS Ohm's law. An easy way to remember the formula and it's configurations is to draw a circle and divide it in half horizontally. Above the line write "E". In the lower half divide the semicircle vertically and write "I" on the left, "R" on the right. It should look something like this:\n                                                     E\n                                                   I    R\nNow just cover up the one you need. and either divide, or multiply.
1046783
Associate the thing you want to memorize with an outlandish visual image.\nExample: You hear "Meditation from Thais" on the car radio and want to remember the name so you can buy it\n\nPicture Mahatma Ghandi in full lotus position\nHis eyes are closed and around his neck there is a huge tie with pictures of the sun rising over the ocean printed on it\n\nWhen you recell the image you will remember\n"Meditation" (Ghandi in Lotus position)\n"Tie" (the thing around his neck\n"East" (sunrise)\nThe more outrageous the visual image the more easily you will remember the associated word, name or phrase
870276
bdenton2k is right. Also to use mnemonics.\n\nHere are some links that you may want to refer to:\n\n1) http://www.memletics.com/manual/mnemonics.asp\n2) http://www.fun-with-words.com/mnemonics.html\n3) http://www.coun.uvic.ca/learn/program/hndouts/mnemon.html
158584
Try,\n\nhttp://www.personal.psu.edu/faculty/d/x/dxh40/MBLemma.pdf
345647
http://www.phys.ufl.edu/docs/matlab/toolbox/comm/tutor3.html
786730
Use the right hand rule, also known as the rule of thumb. If you have a wire (insulated!) with a current flowing through it, grab the wire in your right hand, with your thumb pointing in the direction that the current is flowing. Your fingers will curl around the wire in the direction of the magnetic field.\n\nIf the current alternates (periodically reverse direction) then the magnetic field also alternates. Envision it as a cylindrical zone that has the wire down its axis, and that the cylinder expands and contracts as the current of electrons increases or decreases. \n\nNow, suppose we wrap our wire around a coil form to make a coil. There is also a right hand rule, or rule of thumb, for coils. If you hold the coil (again, use insulated wire!) with your fingers wrapped around it pointing in the direction that the electron current flows, your thumb will point in the direction of the north pole of the coil.\n\nHow does that work? Remember, we are imagining the magnetic field as a cylindrical region around the wire. But the surface of the cylinder is rotating. (We'll stick with current in only one direction for the time being. It's easier to follow.) So think of the flow of the magnetic field as rotating around the wire. \n\nNow, if we wrap the wire into a coil, the rotation of the segements of the magnetic field add up in the same direction. They are working together. This is why the field is stronger inside the coil.\n\nWe should also think of the magnetic field as composed of individual lines of force that repel one another. That is why, when they exit one end of the coil and return to the other, they spread out in space. \n\nWe can see this if we hold a magnet under a sheet of paper or aluminum foil and sprinkle iron filings on top. They cluster most around the poles where the field lines are concentrated-- the field is strongest-- and more thinly around the outside of the magnet, where the field lines spread out, because the field is weaker there. This holds true for any magnet, not just electromagnets.\n\nI hope this is clear enough to help. It is a little tough trying to understand things we can't see.\n\n19 NOV 06, 1816 hrs, GMT.
397487
hi,\n\nthe degree of sophistication for electromagnetics simulations can vary widely.  i'm not sure what kind of background you have or how sophisticated you need this software to be, but the most comprehensive kind of EM solver uses a method called FDTD (finite difference time domain) to numerically solve maxwell's equations in 3D space & time.  \n\nso, i searched the web for "FDTD download" and found this page:\nhttp://www.ems-plus.com/index.html\nwhich looks to have a 30-day free trial of their FDTD code.  \n\nkeep in mind that this is probably a not-great code, as a really good one suitable for scientific/engineering use will probalby run you around $5k just for the software.  however for something like a plane wave in free space i'm sure it'll work.\n\ncheers
161645
I hope the following links help:\n\nhttp://galileo.phys.virginia.edu/outreach/8thgradesol/Magnet.htm\n\nhttp://www.phy.syr.edu/courses/PHY222.05Fall/manuals/magneticfield.pdf\n\nhttp://www-personal.umd.umich.edu/~devlin/phys151/Lab_M151-8.PDF\n\nhttp://electron9.phys.utk.edu/phys136d/distlab/lab8.htm
697733
No easy way to memorize...Just constantly using them will make them easier to remember.\nMake flash cards...place them randomly about the house,like the fridge, bathroom mirror, car seat, etc.   Before you cna use that object to must try to name the ion.  Flip the card to the other side to make you do the reverse the next time.
43146
Use Kirchoff's laws.  Read page at link then follow the link "example."\n\nhttp://www.pa.msu.edu/courses/1997spring/PHY232/lectures/kirchoff/kirchoff.html\n\n--- \nadded:\nwow! pjw, that UTex link is a cool online tutorial!
760226
hi..\ni am devi here..well your the third to whom i am giving this advice..actually i have won the best answer award for giving this answer for another student like you..well i did this from grade 10-grade 12 and it did really work out because i came out with distinction and flying colours..\n\nso heres what you goto do..\n\n*first of all study the chapters on regular basis ,i mean..everyday portions you study everyday .. i know it is difficult.. but set aside half an hour or one hour for every subject just to finish the same days portion "only.".make sure you recollect all what you studied in that one hour or half an hour's time mentally\n\n* languages can be studied either daily or on alternate weekends. before the start of every weekend.request your teacher to give you a worksheet of the chapter that is currently going on and then you time yourself like you go for exams and complete and give it to the teacher for correction when you get back to school..i know it will be hard fro you when you have to study fro tests also on weekends..but you have to do it .so when she corrects the paper and returns it back to you,see your mistakes and try to find the right answers to it and maek the answers next to the wrong ones or atleast write where the refernce sections page to the answer is.. thisway for all the subject if you do then you store these test papers in different files and can study them before your board exams.\n\n* THIS IS VERY IMPORTAN T FOR YOU FOR THE NEXT 2 YEARS \n\nmake seperate formula book fro chemistry,physics ,biology and maths \nand make sure you "ONLY" write down all the related formulas/phenomenons/ defintions and in it sincerely at the end of the day after your school,so make sure you revise it everyday in the morning before you leave school.. so it will get registered in your mind. this will be you asset til you leave school after 12th. \n\n* by the end of every weekend just remind yourself as to see how much portion is taken till date in all the subjects and try to just go through to find out if you have written down the formulas in your formula book and "only"recollect the details taught by your teacher..\nif you cant then spend some time reading throught that particular section and recollecting later.\n\n* whenever you sit to study a subject ..time yourself fro a particular section and study ,,because too much time spent on a particular section will lead you to wastage of time fro other subjects..once you complete that section..make sure you recollect it then and there and jot it down next to that section! if you still find difficulty approach your subject teacher fro further assistance\n\n* maths/physics/chemistry work sheets must be worked out by you on long leave say abt 3-4 days holiday and request you teacher to prepare and give it to you before hand..\n\n* before your teacher advances for the next chapter always remeber to ask her the expected,essay type /short answer or fill up type question with view to the boards\n\n* prior to your mock/board exams revise your own question which you have filed for different question and if possible try finally answering the previous years board papers too! this will get the fear out of you facing the board exams and get you prepared well. \n\n* for your practicals study all the formulas and try examinign youself for any of the pratical problem and present it to the teacher for advice!\n\n* DONT FORGET YOURSELF TAKE SOME RELAXATION AND BREAK ... THIS IS IMPORTANT IN LIFE TOO\n\nTIPS:\n* believe in your self.. dont get frustrated while you study and cant finish tthe portion.. just be calm \n\n* always pray to relax yourself..because a tensed mind cannot store anything and the brain will refuse to accept the data you learn..\n\n* dont day dream: it usually happens when you get bored with the subject..so dont let it divert you from your goal: victory of the X grade\n\n* you can do it my friend..just make sure your perfect and flawles
953272
f * w = c\n\nFrequency in Hertz times wavelength in meters equals the speed of light.\n\nTo solve for frequency.\nf = c/w\n\nTo solve for wavelength\nw = c/f
971390
{3XY^2M/1}-{2M/[X^-1Y^-1]^2\n+{[4X^2Y^2]/M^-1}-\n(3X^(3Y)^(3M)^-1/(XYM)^-2
818946
OK, here they are verbally:\n\n"Maxwell's four equations express, respectively, how electric charges produce electric fields (Gauss' law), the experimental absence of magnetic monopoles, how currents and changing electric fields produce magnetic fields (the Ampere-Maxwell law), and how changing magnetic fields produce electric fields (Faraday's law of induction)." [See source.]\n\nGauss' Law--simply says electrons in motion will create a force field around the current.  This law follows the inverse square of the distance rule and the phenomenon is the basis for radio and TV broadcasting waves.\n\nThe monopole equation simply says that there must be both a north and south pole in magnetism.  (However, sometimes fictitious monopoles are used mathematically to solve some problems.)\n\nThe Ampere-Maxwell equation links changing electrical current to the creation of magnetic flux.  The Faraday equation links changing magnetic flux to the creation of electrical current.  This is the stuff that electric motors and electric generators are made of.\n\nThe Maxwell equations have a lot of practical applications.  Wave guides, such as for high powered radars, and coax cables, like for your TV, are designed using Maxwall equations.
31718
for an ohmic material:\n\nP=VI\nV=IR\nso\nP=I^2 * R\n\ncheers!
917169
L = μ(0) μ(r) N^2 A/l\n\nwhere\n \nμ(0) is the permeability of free space (4π × 10-7 henrys per metre) \nμ(r) is the relative permeability of the core (dimensionless) \nN is the number of turns. \nA is the cross sectional area of the coil in square metres. \nl is the length of the coil in metres\n\nHere we assume that μ(r) = 1, since the solenoid doesn't enclose anything like a metal core. Then\n\nL = [μ(0) N^2 (πR^2)] / l, where R is the radius of the solenoid\n\n= [(4π × 10-^7)(2920)^2(π(0.005)^2)] / (0.1)\n\n= 8.44 × 10-^3 henries