A coil of 45 turns and radius 4 cm is placed in a uniform magnetic field such that its plane is perpendicular to the direction of the field. If the magnetic field increases from 0 to 0.70 T at a constant rate in a time interval of 220 s, then the induced emf in the coil is

• A

  0.32 mV
• B

  0.50 mV
• Correct answer
  C

  0.72 mV
• D

  0.96 mV

Hence, the correct answer is option: 'C'.