The figure shows a square loop of side $5 \, cm$ being moved towards the right at a constant speed of $1 \, cm/s$. The front edge enters the $20 \, cm$ wide magnetic field at $t = 0$. Find the magnitude of the $emf$ induced in the loop at $(a) \, t = 2 \, s$, $(b) \, t = 10 \, s$, and $(c) \, t = 22 \, s$.

• A
  $(a) \, 3 \times 10^{-4} \, V, \, (b) \, \text{Zero}, \, (c) \, 3 \times 10^{-4} \, V$
• B
  $(a) \, 3 \times 10^{-4} \, V, \, (b) \, 3 \times 10^{-4} \, V, \, (c) \, \text{Zero}$
• C
  $(a) \, \text{Zero}, \, (b) \, 3 \times 10^{-4} \, V, \, (c) \, 3 \times 10^{-4} \, V$
• D
  $(a) \, 3 \times 10^{-4} \, V, \, (b) \, \text{Zero}, \, (c) \, 5 \times 10^{-4} \, V$