A square loop of side 10 cm and resistance 0.7 Ω is placed vertically in east-west plane. A uniform magnetic field of 0.20 T is set up across the…

A square loop of side $\displaystyle 10$ cm and resistance $\displaystyle 0.7 \Omega$ is placed vertically in east-west plane. A uniform magnetic field of $\displaystyle 0.20 T$ is set up across the plane in north east direction. The magnetic field is decreased to zero in $\displaystyle 1$ s at a steady rate. Then, magnitude of induced $\displaystyle \operatorname{emf}$ is $\displaystyle \sqrt{x} \times 10^{-3} V$. The value of $\displaystyle x$ is $\displaystyle \_\_\_\_$.