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lokeshsardana (692)

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The given assembly made of conducting wire is rotated with a constant angular velocity w about a real axis AC as shown in figure. AD part of assembly is quarter circle of radius R and DB is straight and parallel to axis AC. The magnetic field B? exists vertically upward parallel to axis AC .Find the potential difference between points A and B(only the magnitude).Options are
 
 
(A)    B?(w R2  /2)
(B)    B?(w? R2  /4)
(C)    B? w (2 R2  ? ? R2  /4)
(D)    zero
 
 
 


LOKESH SARDANA,
department of Production and Industrial engineering,
Indian Institute of Technology,Roorkee.


Happiness can be found, even in the darkest of times, if one only remembers to turn on the light.
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Harry Potter and the Prisoner of Azkaban movie


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lokeshsardana (692)

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sorry guys,
I just wrote in MS word and paste in the editor.I didn't notice ? in the problem.
some special characters are missing and I am giving errata
 
 
The given assembly made of conducting wire is rotated with a constant angular velocity w about a real axis AC as shown in figure. AD part of assembly is quarter circle of radius R and DB is straight and parallel to axis AC. The magnetic field B? exists vertically upward parallel to axis AC .Find the potential difference between points A and B(only the magnitude).Options are
 
 
(A)    B(w R2  /2)
(B)    B(wR2  /4)
(C)    B w (2 R - R2  /4)
(D)    zero
 
 

LOKESH SARDANA,
department of Production and Industrial engineering,
Indian Institute of Technology,Roorkee.


Happiness can be found, even in the darkest of times, if one only remembers to turn on the light.
Albus Dumbledore
Harry Potter and the Prisoner of Azkaban movie


There are only two ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle.
-- Albert Einstein

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lokeshsardana (692)

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come on yaar!!!!!! try to solve it...........

LOKESH SARDANA,
department of Production and Industrial engineering,
Indian Institute of Technology,Roorkee.


Happiness can be found, even in the darkest of times, if one only remembers to turn on the light.
Albus Dumbledore
Harry Potter and the Prisoner of Azkaban movie


There are only two ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle.
-- Albert Einstein

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lokeshsardana (692)

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what is the problem guys????????
Is the question difficult or statement is wrong..........

LOKESH SARDANA,
department of Production and Industrial engineering,
Indian Institute of Technology,Roorkee.


Happiness can be found, even in the darkest of times, if one only remembers to turn on the light.
Albus Dumbledore
Harry Potter and the Prisoner of Azkaban movie


There are only two ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle.
-- Albert Einstein

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rooney (894)

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Sorry for seeing the question so late.

Answer is coming out to be (a).

The soln I used is long and requires diagram. Will post later.

Regards
Rooney  

http://14-69-8.blogspot.com
My blog
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krishna.gopal (2691)

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Let center of circular arc be E. Consider a conductor AEDB.
As there is no flux change through close loop AED
So potential across AEDB=potential across ADB (AD is circular arc)
Potential across AEDB=potential across AE + potential across EB
=B*omega*R^2/2+0
So A) is right answer

Krishna Gopal Singh
B.Tech Chemical Engg
IIT Delhi 2002
Currently doing PhD from IIT Delhi
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