A rectangular, a square , a circular and an elliptical loop, all in the `(x-y)` plane, are moving out of a uniform magnetic field with a constant velocity `vec(v)=vhati` . The magnetic field is directed along the negative `z`-axis direction. The induced emf, during the passage of these loops , out of the field region, will not remain constant for :

Options

A. the rectangular , circular and elliceptical loops
B. the circular and the ellitical loops
C. only the elliptical loop
D. any of the four loops

Answer

b

Explanation

CBSE AIPMT 2009