question_answer

The ratio of the induced emf in a coli having 50 turns and rotating with 50 Hz to that of the induced emf in a coil having 100 turns and rotating with 150 Hz in the same magnetic field is:

A)  1 : 2                                      

B)  2 : 3                      

C)  3 : 2                      

D)         1 : 6