The magnetic flux linked with a coil at any instant t is given by the equation =5 t^3-100 t+300 . The magnitude of emf induced in the coil after 3 s is

Step-by-step solution

Given, aligned & =5 t^3-100 t+300 e & =- d d t = -d d t (5 t^3-100 t+300 ) aligned gathered =- (15 t^2-100+0 ) =-15 t^2+100 e t =-15(3)^2+100=-15 9+100 =-135+100=-35 ~V gathered Minus sign signifies the Lenz's law