MHT CET20239 May 2023Evening ShiftPhysicsMagnetic Effects of CurrentActual
If current ' I ' is flowing in the closed circuit with collective resistance ' R ', the rate of production of heat energy in the loop as we pull it along with a constant speed ' V ' is ( L = length of conductor, B = magnetic field)
Options
- AB L V R
- BB ^2 ~L ^2 ~V ^2 R ^2
- CB L V R^2
- DB ^2 ~L ^2 V^2 R
Correct answer
D. B ^2 ~L ^2 V^2 R
Step-by-step solution
aligned & From motional emf, & e _ = BLV & Heat produced = V ^2 r = B ^2 ~L ^2 ~V ^2 R i & = BLV R & | F |= BiL and P = F V P & = B ( BLV R ) LV & = B ^2 ~L ^2 ~V ^2 R aligned