A rectangular, a square, a circular and an elliptical loop, all in the $(x-y)$ plane, are moving out of a…
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, $\vec{v}=$ vi. 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
the rectangular, circular and elliptical loops
the circular and the elliptical loops
only the elliptical loop
any of the four loops
Solution
Area coming out per second from the magnetic field is not constant for elliptical and circular loops, so induced emf, during the passage of these loops, out of the field resion will not remain constant for the circular and the elliptical loops.