1.

Magnetic flux f (in weber) linked with a closed circuit of resistance 10 ohm varies with time t (in seconds) as                          \[\varphi =5{{t}^{2}}-4t+1\] The induced electromotive force in the circuit at t = 0.2 sec. is                                                     [MP PMT 2001]

A.            0.4 volts                                 
B.            ? 0.4 volts
C.            ? 2.0 volts                              
D.            2.0 volts
Answer» E.


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