Not many tried this one..you people seem to be more interested in mechanics!!
"The flux thru system 1 due to current 'i' in system 2 is same as flux thru system 2 due to current 'i' in system 1"...this is the principle of reciprocity (a term i learned in iit) in my own words...
To find the flux thru the inf. plane..you may as well find it thru the inf. loop that i have shown in the dig..and you may assume the current to be flowing thru the inf. loop rather than in the small square!!
The feild at the square's proximity is effectively that of the nearest edge of the loop: the infinite current carrying wire..find the flux thru the square to get the ans...
Nearly all of you got the supplement..unfortunately, i encountered it in a match the column problem..took some guts to mark it B,B,B,B...
most of us are in 11th (giving finals now) ..
ReplyDeleteso we havent done abt current nd magnetism ..
dats y bhaiya !!
:)
sir please give explanation of QUESTION of MOI OF HEMISPHERE ABOUT DIFFERENT AXIS POSTED by you
ReplyDeletesir please give explanation of QUESTION of MOI OF HEMISPHERE ABOUT DIFFERENT AXIS POSTED by you
ReplyDeleteSIR PLEASE SOLVE THE PROBLEM GIVEN BELOW PLEASE!! A child of mass m sits in a swing of negligible mass suspended by a rope of length l. Assume that the dimensions of the child are negligible compared with 1.
ReplyDeleteHis father pulls the child back until the rope makes an angle of one radian with vertical, then pushes with a force F=mg along the arc of the circle releasing at the vertical :
a) How high up will the swing go?
b) How long did the father push?
ans:(a) theta=63degree above horizon (b) t=1.52(l/g)^1/2