14 Replies
@Gyro Gearloose
Note for OP
+solved @user1 @user2... to close the thread when your doubt is solved. Mention the users who helped you solve the doubt. This will be added to their stats.like why are integral p3p4 and integral p4p5 opposite in sign
because B . dl is negative as they kind of are antiparallel
huh???
the red are MF lines and blue is dl vector and if u take dot product bw them u get negative sign cuz angle between them is more than 90 right?
how can u be sure of that
like geometrical proof??
In first diagram u can see alpha cant be zero as u move along line l so angle between l and B and never be more than 90 so there dot product can never positive
In second diagarm i even showed a example at point P4
So u basically guess it like this
@integralofe^2v
Lmao i js realised i draw mf field lines wrong direc but yea what u did is correct
Just basically walk on the path ur taking line integral of and see if comp of B along tht path is along the path ur walking or opposite of it
alrr
thanx
+solved @integralofe^2v
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