A conducting circular loop of radius \( \frac{10}{\sqrt{\pi}} \, \text{cm} \) is placed perpendicular to a uniform magnetic field of \( 0.5 \, \text{T} \). The magnetic field is decreased to zero in \( 0.5 \, \text{s} \) at a steady rate. The induced emf in the circular loop at \( 0.05 \, \text{s} \) is:
