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Grade: 12th pass
        
A circular loop of radius r is placed in a region where magnetic field increases with respect to time as B(t)=at then induced emf in coil
 

a.  pi r a

b. 3Pi r a

c. 2 pi r 2 a

d. 4 pi r 2 a 

 
 
9 months ago

Answers : (1)

Arun
24494 Points
							
Dear student
 
phi = BA
 
E = d(phi)/dt = A dB/dt
 
since B = at, hence dB/dt = a
 
Hence
 
E = a* A = a * pi * r2
9 months ago
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