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In a circuit with a coil of resistance 2 ohms, the magnetic flux changes from 2.0 Wb to 10.0 Wb in 0.2 second. The charge that flows in the coil during this time is 

(1) 5.0 coulomb

(2) 4.0 coulomb

(3) 1.0 coulomb

(4) 0.8 coulomb