43 Replies
@Gyro Gearloose
Note for OP
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what did yuo do
switch band karne ke baad resistance mein confusion ho rha
ðŸ«
Kisika hua ye to batana yar
+1
Bulb ke accross potential difference dono cases mein same hona chahiye I guess
Ye case lagane se hoega ye sawaal
switch band karne ke baad the unmarked resistance will be in parallel with the neeche ka 90 ohm.
you have to equate the current passing through R in both cases
but how do u know its in series with 180 and not 90
by writing the potentials
by checking the potential diff u know that the bulb is in parallel with the 90 ohm resistor, so it'll ofc have to be in series with 180 and not 90
i meant the other 90
these are in parallel after switch closing fs
but this red part equivalent is now in series with blue or green
with green. see just imagine you pulled out the top part (middle wala wire with bulb)
you join it to the end of 90 cuz it's in parallel with that
there's no way way u can simplify it to become parallel by getting it in series with the other 90
it;s like imagine if there were no bulb at all and no wire in the middle
then 180 and AB wala 90 would be in series
so if the bulb is in parallel with 90, it'll be in series with 180
and not the other 90
does this help? @hardcoreisdead
yeah i got it
par ans nahi aa rha
Equate hi nahi ho rhe
@ns current distribution mein galti hai kya
yeah, i was having a tough time calculating too, couldnt get the ans
there may be some mistake
i found the soln to this q
this q is there in pathfinder (byu 31)
you can check the pdf soln on this one.. they've used KCL to solve it
def final case mein kuc dikkat kar rha hu
just cant fig it out
Book mein yeh dia hai
this actually makes sense and gives the right ans too
but i cant fig out error in my soln
hmm..
mere mein galti mili?
@ns
yeah
i dont know what the mistake is
wait ill check once
galti nahi mil rhi ðŸ˜
mera bhi vahi aaya tha
you got the first half right na
yeah
initial part is completely correcg
okay
youve to consider the current through the bulb right
yep
ig the expression you wrote is for the current that passes through neeche wala arm (means the whole thing)
omg
right
ill redo
did you use 90/90+R to split it again
in a bit
okay
aa gya
pehle nahi kia tha
ab kia
aa gya
thanks a lot man
okay great
+solved @ns
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