A given wire is bent into a circular loop of radius $7 \mathrm{cm}$ and it is perpendicular to a magnetic field of  $1.0 \mathrm{T}$. Within $0.1 \mathrm{s}$, the loop is changed to a $100 \mathrm{cm}$ square and the field increases to$1.8 \mathrm{T}$. The e.m.f induced in the coil will be
 

A long conductor $AB$ lies along the axis of a circular loop of radius $R$. If the current in the conductor $AB$ varies at the rate of $I$ ampere/second, then the induced emf in the loop is

A square coil of $0.01 {\mathrm{m}}^2$ area is placed perpendicular to the uniform magnetic field of intensity ${10}^3 {\mathrm{Wbm}}^{-2}$. The magnetic flux linked with the coil is 

As shown in the figure, there is a permanent magnet and a current carrying coil. If the coil is moved towards the magnet then, current in the coil (magnet is symmetrical),

Find the magnetic flux linked with a square coil of side $0.1 \mathrm{m}$ placed perpendicularly to a uniform magnetic field of intensity ${10}^3 \mathrm{Wb} {\mathrm{m}}^{-2}$.