question_answer

The formula for induced e.m.f. in a coil due to change in magnetic flux through the coil is (here A = area of the coil, B = magnetic field)                                                         [MP PET 2002]

A)            \[e=-A.\frac{dB}{dt}\]     

B)            \[e=-B.\frac{dA}{dt}\]

C)            \[e=-\frac{d}{dt}(A.B)\]  

D)            \[e=-\frac{d}{dt}(A\times B)\]