Most Important Selected Qs for JEE AdvancedPhysicsElectromagnetic Induction
A uniform but time varying magnetic field B=C-K t , where K & C are positive constants and t is time (in seconds), is applied perpendicular to the plane of a circular loop of radius ' a ' and resistance R. Find the total charge (in coulomb) that will pass through any point of the loop by the time B becomes zero. [Given a =2 ~m , R = , C =2 ~T ]
Correct answer
8
Step-by-step solution
aligned & = B A ; =- d d t =K a^2 ; i= R = K a^2 R and at t = T ; B =0 0=C-K T T= C K & q=i T= a^2 C R =8 C aligned