In a magnetic field of 0.05T, area of a ...

In a magnetic field of `0.05T`, area of a coil changes from `101 cm^(2)` to `100 cm^(2)` without changing the resistance which is `2Omega`. The amount of charge that flow during this period is

`2.5 xx 10^(-6) "coulomb"`

`2 xx 10^(-6) "coulomb"`

`10^(-6) "coulomb"`

`8 xx 10^(-6) "coulomb"`

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