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A mettalic wire ABC is placed along the curve y=x 2 . Coordinates of point A,B and C are (-1,1) (0,0) (1,1) respectively. The wire is rotating with angular velocity 4 rad/s about z-axis in anti-clockwise sense about the point (0,0). There exists a uniform magnetic field B=2 tesla towards negative z- axis. then find the induced EMF between the points A(-1,1) and C(1,1).

A mettalic wire ABC is placed along the curve y=x2 . Coordinates of point A,B and C are (-1,1) (0,0) (1,1) respectively.


The wire is rotating with angular velocity 4 rad/s about z-axis in anti-clockwise sense about the point (0,0).


There exists a uniform magnetic field B=2 tesla towards negative z- axis.


then find the induced EMF between the points A(-1,1) and C(1,1).


 


 

Grade:12

3 Answers

Roshan Mohanty
64 Points
8 years ago

is the ans pie^2 . 2 ???
Stretch the wire to a straight wire then do..it will become easy


Please approve 

Vikas TU
14149 Points
8 years ago

Distance from (-1,1) to (1,1) is 2

so emf induced is equals to = Bwl^2/2

                                                  = (2 x 4 x 2 x 2)2

                                                  = 16 Volt.

 

 

 

 

PLZ APPROVE!

Anshuman Chandel
24 Points
8 years ago

vikas yadav....

this we can do only if the wire is rotating from one of the ends of the parabola....

but in this case it is rotating about the point (0,0).

 

so your answer is wrong...........

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