Fig. Shows a square loop of side \( 5 cm \) being moved towards right at a constant speed of \( 1 cm / s \). The front edge enters the \( 20 cm \) wide magnetic field at \( t=0 \). Find the emf induced in the loop at (a) \( t=2 s \), (b) \( t=10 s \), (c) \( t=22 s \) and \( ( d ) t =30 s \). Find the total heat produced during the interval 0 to \( 30 s \) if the resistance of the loop is \( 4.5 m \Omega \).