18 A horizontal ring of radius r 1 2 m is kept in a vertical

Last updated: 6/11/2023

18 A horizontal ring of radius r 1 2 m is kept in a vertical constant magnetic field 1 T The ring is collapsed from maximum area to zero area in 1 s Then the emf induced in the ring is 1 1 V 3 2 V 2 4 V 4 TV