Question

Two concentric circular loops are in
same plane. These loops have radii R1
and R2 (R >> R2). In outer loop a
current is flowing which is given by 1 =
locos(wt). Emf induced in the smaller
loop is given by​

Answer 1

Answer:

given = 2 concenric circular loops

             radius of 2 concentric circles R1 and R2 respectively.

to find =  EMF induced

solution =

       i = a + Bi / R1

      R2 = resistance of smaller loop magnetic feild due to large loop.

      B2 = μοi/2R1 ..... uniform in loop        

      flux through the smaller loop,

     Ф1= B2A1 = μοi/ 2R1   ΠR2² =  μο( a + B1)πR2²/ 2R1R2

     induced EMF in smaller loop

    e1 = dΦ/dt = μοB πR2²/2R1R2

    the induced EMF in the smaller loop is given by  μοB πR2²/2R1R2