question_answer

The current flowing in two coaxial coils in the same direction. On increasing the distance between the two, the electric current will                                                                  [MP PMT 1991]

A)             Increase

B)             Decrease

C)             Remain unchanged

D)             The information is incomplete

Correct Answer: A

Solution :

                   Induced current in both the coils assist the main current so current through each coil increases.