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A small piece of wire is passed through ...

A small piece of wire is passed through the gap between the poles of a magnet in 0.1 s. An e.m.f. of `4 xx 10^-3 V` is induced in the wire. The magnetic flux between the poles in Wb is

A

10

B

`4 xx 10^-4`

C

`4 xx 10^-2`

D

0.1

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