Current Electricity (Semi Circular Strip)
How to get a relation for delta(V) between its inner and outer radius
13 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.B is a ans?
ok for the first one its just V/R
there will be no role of Delta V in the first once
as Delta V is Perpendicular to I , it has no effect on I
as for the last one
dleta V = Int (E.dr)
qE = MV^2/R (V= Vd ) , they are going around in circles so there must be a centripetal/centrifugal force , which is This
E = MV^2/Rq
E directly proportional to Vd
I = nVdeA
I directly prop to Vd
Hence 4th is right
yes B is the answer
How did you find the direction of electric field
there are 2 ways to see it
first the outer plate and inner plate
Since current is const
angular velocity will be const
and hence velocity wil be more at Outer plate
and velocity will be lesser at inner plate
electronst would be closer since velocity is lesser
hence a E from The outer plate to inner plate
since electron is -ve it does opp to what +ve charge would do
second one is using the centrifugal force , it must have a force away from center , hence from outer to inner plate
there are some wierd things tho , many places ans is C and not B
if u take elec field as Centripetal its C
and if Centrifugal its B
@Percy where is this question from
ohh
physics wallah
https://www.youtube.com/watch?v=oIy4Sw3LG9Y&pp=ygUfZWxlY3RyaWNpdHkga2F0dGFyIGplZSBhZHZhbmNlZA%3D%3D
first question
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Shown in the figure is a semicircular metallic strip that has thick...
Shown in the figure is a semicircular metallic strip that has thickness t and resistivity ρ. Its inner radius is R_1 and outer radius is R_2. If a voltage V_0 is applied between its two ends, a current I flows in it. In addition, it is observed that a transverse voltage ΔV develops between its inner and outer surfaces due to purely kinetic eff...
this one is also from PW
here also C
and on 2-3 Websites its als C
oof
wait nvm
its given as C in this video too
@Gamertug
ye makes more sense
electric field will act as Centripetal
Electrifield will go away from center
so force will be towards center
makes sense
thanks a lot bro
+solved @Gamertug
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