21 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.C me mujhe doubt hora
Usually perpendicular motions me B does no work
Maybe wo logic idhar bhi lagra ho?
Not too sure about this
directions dont say so
shouldnt it be only A @integralofe^2v
yea magnetic field dosent do any work here, its the electromotive force generated by moving rod in magnetic field which does the work
why wont it do work
-B^2 l^2 v^2 / R hoga na
power
are wo to electromotive force ke karan work ke, like jo battery banegi in the rod that battery does this work, the sole purpose of magnetic field is to move the electrons inside the rod to ends of it to create a potential
magnetic force bhi toh hai
ek doubt aisa pehle bhi pucha tha
bil
on rod
i dont know if i understand this well enough par ha like individual charges pe always magnetic field ka work zero hoga (lorentz).. but macroscopically ampere force can do work (cuz ive like solved problems jisme they've asked amp force ka work). at least this is what ive learnt. but like in such qs and in our syllabus we pretty much only consider lorentz wala part ig isiliye option d will be right
i may be wrong
ttps://physics.stackexchange.com/questions/672075/why-is-the-magnetic-force-not-doing-work-on-the-falling-current-carrying-wire#:~:text=When%20it%20comes%20to%20determining,force%20do%20work%20or%20not?
check the accepted ans on this one
Physics Stack Exchange
Why is the magnetic force not doing work on the falling current car...
Given that the loop of wire is falling down and the magnetic flux is changing, a current is induced in the counter-clockwise direction.
When calculating the force on the wire, $ Ids \times B $, it ...
interesting
this was a ques in the same test . this considers the work done by magnetic force. why wont the ques posted above neglect that
,rotate
yeah even i've solved problems where in they've asked specifically the work done by ampere force.. tbh i dunno but in general we just stick to this thing that magnetic field doesnt do any work. in this q you've posted too ig it's the ampere force doing work type q. we say ampere force just to keep it distinct but essentially it is the same thing just the conductor on the whole. so yeah ig in our syllabus when asked whether the magnetic field does work the ans should be no
but yeah it'll be better to confirm this with someone else since im not too sure
ok ill ask around
can u see the AC one
i havent done it sry
oh alr np
+solved @nori
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