radius of a circular loop placed in a perpendicular uniform magnetic field is increasing at a constant rate of r1 - Physics - Electromagnetic Induction

Question

radius of a circular loop placed in a perpendicular uniform
magnetic field is increasing at a constant rate of r1 m/s if at any
instant radius of the loop is r, then emf induced in the loop at
that instan twill be
1) -2Brr1
2) -2B(pie) r
3)-B(pie)r1r
4) -2B(pie)r1r

Aditi · Accepted Answer

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radius of a circular loop placed in a perpendicular uniform magnetic field is increasing at a constant rate of r1 m/s. if at any instant radius of the loop is r, then emf induced in the loop at that instan twill be 1) -2Brr1 2) -2B(pie) r 3)-B(pie)r1r 4) -2B(pie)r1r

radius of a circular loop placed in a perpendicular uniform magnetic field is increasing at a constant rate of r1 m/s. if at any instant radius of the loop is r, then emf induced in the loop at that instan twill be

1) -2Brr1

2) -2B(pie) r

3)-B(pie)r1r

4) -2B(pie)r1r