find out the magnetic field due 2  the which is at a distance l/2 - x frm center and then integrate it frm `0` to `l`..

use the formula for field at an axial pt.... replace i by indx and d by l/2 - x.......... and then integrate u wil get the answer....

how do i find the magnetic field at a pt. due to a semi-infinite wire ?????

one theta will be 0 but the other theta (the angle tht the fixed end makes with the pt) will have some fixed value and it would vary for diff wires ... then how can we generalize it 2 a formula... mu₀i / 4 (pi) r    ???

here r is the dist of the pt frm the wire and mu₀ is tht greek letter which has a value of 4 (pi) * 10^-7

reply soon.......... rates for sure........

i knw the pics not tht clear but its like tht one in resnick halliday........u have to find the magnetic field at pt. P.....here the arrow shows the direction of the current. here theta and the distance of pt.P frm the circular arc keep varying .... while the magnetic field due to both straight wires comes to be zero....... wat do i do ????? pls guys its a piece of cake 4 u all..............reply and get rated.....if a person tell the answer by a differnt method he too will get rated...........

pg 250 and  251

q.10

q. 19......... 4 this i aint getting the answer zero............ B gets added in same direction.......

pls tell it wont even take u geniuses 30 sec,,,....  reply soon and get rated......

hey is the answer 1 A ???

Respected sir,

                         i really aspire to become an iitian.... but the prob is tht im in 12th now and the college is an hell of a place to be in..... always attend lectures as it is compulsory,go for practicals, attend coaching institutes.. the result being tht i am left with no energy for self study .... within this gruelling schedule i get hardly 6 hrs fot it.... i just wished whether u could provide me with an unqiue time table which will give me maximum efficiency for studying irrespective of college timings and practicals and coaching institutes.... ill manage tht as im going bunk every lecture from now on !

also i wanted to ask u some tips on concentration as well as self motivation........ which includes inculcating confidence in me..also i wished whether u could tell me which books should i refer for last minute revision or for practising problems clearing all misconceptions...

Awaiting ur response.... thanx in advance, sir .

come on guys, experts !!! help............

hey solve irodrov, electrodynamics.... pg 105 ques no 3.2 and pg 106 , ques 3.7, 3.8 and 3.10 pls.... waiting for an answer .... ratings on for sure !!!