Saved Bookmarks
| 1. |
A uniform conducting ring of mass `pi` kg and radius 1 m is kept on smooth horizontal table. A uniform but time varying magnetic field `B = (hat (i) + t^(2) hat (j))T` is present in the region, where t is time in seconds. Resistance of ring is `2 (Omega)`. Then Heat generated (in kJ) through the ring till the instant when ring start toppling isA. `(1)/(3pi)kJ`B. `(2)/(pi)kJ`C. `(2)/(3pi)kJ`D. `(1)/(pi)kJ` |
|
Answer» Correct Answer - C Heat generated `H=int_(0)^((10)/(pi))I^(2)Rdt=int_(0)^((10)/(pi))pi^(2)t^(2)xx2xxdt` `=(2000)/(3pi)J=(2)/(3pi)kJ` |
|