Question

A wire bent as a parabola y = 4x² is located in a uniform magnetic field of 2T, perpendicular to xy plane. At T = 0, a connecting bar AB starts sliding from origin with constant acceleration of 2 m/s along +ve y-axis. Find the emf (in volts) and y=2m
(A) 8V
(B) 9V
(C) 10V
(D) 11V​

Answer 1

Answer:

B

=B↑

Velocity of rod after travelling dy distance u.

we know that,

S=ut+  

2

1

​  

at  

2

 

y=0+  

2

1

​  

αt  

2

  (t=  

α

2y

​  

 

​  

)

dt

dy

​  

=αt

V=αt=  

2αy

​  

 

emf induced ε=VB(2x)

=  

2αy

​  

×2xB

x=  

2

y

​  

 

​  

 

ε=  

2α

​  

.By

Explanation:

Answer 2

Answer:

Am I

Explanation:

I think

Option B) .......................XD