3
iitimcomin
·2009-10-10 03:07:43
howd did u get answer key for exam .... even i rote ftse!! but didnt get any soln. booklet!!!!
3
iitimcomin
·2009-10-10 03:09:26
dunno if rite
ans=∫i^2Rdt[0->∞]/∫idt[0->∞]...(1)
we have
iR = BL^2W/8 ... (2)
nd torque due to i thru the ...
T= ∫BiLdL [0 --> L/2] ...(3)
-dW/dt = T ...(4)
get i and w as a fxn of time ... we see the rod stops only at t = infinity ......
put i(t) in eqxn 1 .........
3
iitimcomin
·2009-10-10 03:10:11
nd how did u remember question exactly they took away the q papers na !!!
1
decoder
·2009-10-10 08:17:18
dude it also came last year in thier AITS.........may be he had taken it from there
1
rickde
·2009-10-10 11:36:09
tis was the best q
in the central rod two battries will be induced in opp directions wit emf e=1/4 L^2 W
then solve for current