25 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.is the resultant circuit smthing like this
the q mentions that you've to neglect ring resistance
and the net resistance in the final circuit is R
so i dont think uve to do this
it's just equating torques
is emf =R mgsinwt/aB + 1/2Bwa^2
shit. pura padh lena chahiye tha
i wonder how we'd solve it with the resistors
it would become complex right
yeah
what was your current
i am getting same yours but second term is negative
mgsinwt/aB = i
current = E + Eind/R
basically how do u decide the dirn of induced emf
uve to use the rht rule
v X B karo
whi kia
force comes along the rod but in upwards dirn right ??
so +ve charges will be induced on the upper end
yeah so circumference ke side pe higher potential hoga
han so iska first figure bana na
i took it ulta.. with the positives on the same side.. to subtract karna padega current ke liye
the q shouldve provided the polarity of the original battery
kinda vague ig
thats exactly what my doubt is .
like +ve same side kyu lie
hmm. yeah not very sure rn
koi na see the 2nd one for now
i saw the same ques in pg but with mentioned polarities
yeah then it's just that q is ambiguous
btw ig I understand. E source has to be opp and greater... torque ke directions dekho
it wont be able to balance otherwise @hardcoreisdead
how are they related
yeah so ig you're ans with a minus sign should be right. i was doing some mistake in torque directions. eind source se kam hoga to if they're in series arrangement like u did, it should give a torque out of the plane... which balances the torque of gravity (into the plane)
but does the soln say +/-?
i dunno.. now i feel - seems more appropriate
+
@integralofe^2v . can u tell why we do E-Eind
Abhi itna emi nhi pada but i will see this tom, i will complete emi today thats why😭
oh alr np
@integralofe^2v hua??
if i be honest rn dawg i got distracted last night by yt but hopefully aj krunga emi 😭🙏
lol alr
it doesnt require more than motional emf btw