A rectangular coil of 300 turns has an average area of average area of \[25\ cm\times 10\ cm.\] The coil rotates with a speed of 50 cps in a uniform magnetic field of strength \[4\times {{10}^{-2}}T\] about an axis perpendicular of the field. The peak value of the induced e.m.f. is (in volt) [KCET 2004]

• A.               \[3000\pi \]              
• B.               \[300\pi \]
• C.               \[30\pi \]                  
• D.               \[3\pi \]