NEET Physics Question - Electromagnetic Induction

A square coil ACDE with its plane vertical is released from rest in a horizontal uniform magnetic field B of length 2L. The acceleration of the coil is : Image related to

less than g for all the time till the loop crosses the magnetic field completely

less than g when it enters the field and greater than g when it comes out of the field

g all the time

less than g when it enters and comes out of the field but equal to g when it is within the field

Solution:

The acceleration is less than ' $g$ when entering or leaving the field because the changing magnetic flux induces a current that creates an opposing upward force (Lenz's Law).

Once the coil is fully inside the uniform $2L$ field, the flux is constant, the induced current drops to zero, and the coil falls freely with acceleration equal to $g$ .

Rankers Physics

Solution:

Leave a Reply Cancel reply