A coil has 2000 turns and area of\[70c{{m}^{2}}\]. The magnetic field perpendicular to the plane of the coil is \[0.3Wb/{{m}^{2}}\]and takes 0.1sec to rotate through\[{{180}^{o}}\]. The value of the induced e.m.f. will be [MP PET 1993; Similar to AIIMS 1997]

• A.            \[8.4V\]                                  
• B.            \[84V\]
• C.            \[42V\]                                   
• D.            \[4.2V\]