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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

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a

5.0 coulomb

b

4.0 coulomb

c

1.0 coulomb

d

0.8 coulomb

answer is B.

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Detailed Solution

ΔQ=ΔϕR=(10−2)2=4C

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